Table Of ContentTThhee JJaapapnaesneSeosciee tySociety ffoorr PPllanatnt SSyystsetmaetmicastics
ISSN1346-756S ActaPhytotax,Geobot.57(1):65-73(2006)
Arundinetla breviarista(tPaoaceae),
riparia subsp.
a New RheophyticGrassfrom Shikoku, Japan.
YASUSHI IBAIkeXGI
7bkushima Pre:fZictuMruasleum, Bunka-no-moriH,itchiman-cho,'7bkushiJmaap,an770-8070
A new rheophytic grass, Arundinella riparia subsp. bFeviarist altbaarag ii,s describe dI.t is simi]ar to
subsp. riparia in leafanatomy r,hizome shape and hal)it abtu,t is differe nitn awn length s,pikelet length
and distribution.
Key wordsi Arundinella, fiora R,DB, rheophyte, Shikoku
Arttndinel rlipaaria Honda is an endangered rheo- Materials and Methods
phyte ,It is distinguish efdrom it snon-rheophytic
"Ilanaka
allyi A. hirt a(Thun b.) by having a geniculate Herbarium specimens ofArundinella hirt aand A.
long awn and long elongatc rhizomes (Hond a1929, riparia deposite din the fo11owin gherbaria were
hlateoka
1969) .Althoug hA, riparia has occasionally studied (abbreviat fibolnlso wHolmgren et aL 1990):
been treate das an infiraspec itafxiocn efA, hirta KYO, MAK, MBK, TI, TKPM, TNS and TUS,
(Ohw i1941 ,Koyama 1987) ,the differenc iens leaf They were also used as the basis fbr the distribution
anatomy alse suppert it sdistinctio fnrom A. hirta map (Fi g6.).
(Kyod 1a988), td"vn length was measured on five floret sper
Arundinella has been from Anatomical followed
riparia reported specimen. observations
the Tbkai area (Shizuo ktahe) ,Kii Peninsula and Kyoda' s(198 8me)thod. The source ofthe leafsam-
Shikoku ([Ibkush anidm aKochi) (Osad 1a 989, Abe ples ofArundinella hirt aand both subspecies of
1990, Environmen tAgency of Japan 2000, Ohira A. riparia are liste din Table 1. The samples were
2004) .Ishi iet al, (200 1ho)w,cver ,have questiened fixed in FAA, dehydrate idn a tertia rbyutano lseries,
whether the plant sfrom Tokushima are identicalsectioned at a thickness of1O - 12 prn, and stained
to A. riparia, because they lack a geniculat elong with Delafield' shematoxylin ,safranin, and fast
awn. green .For the measurements, ten spikelets were
Ib deterrni ntehe taxonomic status of those chosen from each specimen examined, The vouch-
plants t,he leaf anatomy, awn lengt hvariation and ers are deposited in TKPM,
rhizome shape ofthe rheophyte from Shikeku and
related taxa were investigate dT.he results indicate Results and Discussion
that the rheophyte from Shikoku represents a new
subspecies, Arundinell raiparia subsp. breviarista-Awn length
ta. Avvn lengt hhas been regarded as an importan dtiag-
NII-Electronic Library Service
TThhee JJaapapnaesneSeosciee tySociety ffoorPrl anPtlant SSyystsetmaetmicastics
66 APG Vbl.57
TABLE1. MDucher sof leafmateri aAllsl s.pecimens are deposit eidn the Herbariu omf Tokushim aPrefectu rMaulse urn (TKPM),
Taxa Locality Cellector Speeimen number or Date
Arundinetlaripariasubsp.breviaristata
Tokushima: At the side of Lakc Ikeda,
Ikeda-cho,Miyoshi-gun. Y. Ibaragi 11iO0300J, iiJO03002, 111003003
Tekushima: Along the Yoshino river,
Yamashire-cho,Miyoshi-gun. X Ibarctgi 111003004, 111003005, 111003006
TokushimaY:oshine Minawa,
rivcr,
Ikeda-cho,Miyoshi-gun. T. Jnobe s,n. 1.3 S0ep. t973]
A. riparia subsp. riparia
Mie: Ogawaguchi, Kiwa-cho,
Minamirnure-gun. M Ogau,a 07631, 07635
Mie/ Ogawaguchi, Kiwa-cho,
Minamimuro-gun. M lbarctgi 04100400I
A. hirta
Fukushima/ Matsukawa-ura. Soma city. 7' .Kurosawa 2023462.f-145
Yamanashi:Metosu-lake. X Akasawa
Tekushiina: Orone-dani,Yeuze,
Kamiyama-cho,Myozai-gun. Y. Iharagi l61003001
Tokushima: Takatoi,Sanagouchi-sen,
Myoudou-gun. X Iharagi 021003003
Tokushirna:NeartheTekuerijticmple,
Sanagouchi-son,Myoudou-gun, M Ibaragi 021003005
Tekushirna:Nearthehyotanike-pond,
Mt. Kajigamie Anan city. X lharagi 28090IO
Tekushima:Mt.Tehnomru,
Higashiiyayama-son,Miyoshi-gun, M Ibaragi 280903004
Tekushima:Ohsima Isl.M,ugi-cho, Kaifu-gun. Y.Jbaragi 22100370
Tekushimai Mt. Atage, Kaifu-che ,Kaifu-gun, K Ibaragi et aL 221003027
Tokushima: Awanoura, Kainan-cho, Kaifu-gun. F. Jbaragi et aL 221003028
nostic character in Japanese Arundinella (Ohwi Rhizome
1941, Tateoka 1969). fateoka (1969 )investigated The fbrm of the rhizome has been Tecognized as one
the variation in awn length in Arundineli aand of the importan tcharacters for distinguish itnhge
showed that A. riparia has a long ,geniculat eawn, rheophytic Arundinell raiparia from it snon-rheo-
while A. hirt ahas merely a shert projectio nat the phytic ally, A. hirt a(Tateo k19a69, Kyoda 1988).
apex of the lemma, Tateoka (1969 )reported the The diffk)ren icne thizome fbrrn is believe dto be due
variation in awn lengt hin A. riparia and A. hirt ato to adaptation to habita tT.he rhizorne ofA, hirt ais
be 2 - 3.6 mm and O - 1 .4 mm, respectiyely, always conspicuously horizontal ellyongated, while
Fig .I shows the variation in awn lengt hin that ofA. riparia usually is not (Fi g2.). Fig. 2-A
both subspecies ofArundineUa riparia. The range of shows the rhizome ofA. riparia subsp. breviarista-
variation in awn lengt hofA. riparia, 0,1 - 4 mm, is ta, The rhizome is not horizonta lelloyngated and the
wider than that reported by Tateoka (1969 )Be,cause buds at the base of the culm elongate upward, These
the range of variation in A. riparia include sthe characteristics of the rhizome ofA, riparia subsp,
range ofvariation ofA. hirt a(fateo k1a969), it is riparia (Fi g2,B) easily distingui ist hfi:omA ,hirta
impossibl teo distingui tshhese taxa by awn length (Fi g2.C).
alone, The awn of subsp. breviaristat ajs shorter
than that ofsubsp. riparia (Fi g1.) ,as pointe dby Leofanatono)
Ishi eit aL (2001). Kyoda (1988 s)howed that Arundinell ahirt ahas
NII-Electronic Library Service
TThhee JJaapapnaesneSeosciee tySociety ffoorr PPllanatnt SSyystsetmaetmicastics
April 2006 IBARAGI: New subspecies ofArundinella riparia 67
70 herbama in Japan from throughout it sentire distri-
m butio narea, I did not fin da spe¢imen with a spikelet
60 as srnall as thosc reported by Koyama (1980 h)o,w-
ever. Because it is likel ythat the measurements
jog!'11[+L! sE includ enot only those of subsp. riparia, but also
40sttstse subsp. breviaristat aI, did not use the data from
Osada (198 7or) the Environmen tAgency of Japan
loE20 (200 0f)or comparison in this study.
Fig, 4 shows spikelet lengt hvariation in both
1
The
subspecies ofArundinella riparia. spikelet
10 length in subsp. riparia rangcs from 4,5 - 5 mm,
/ tt with a mean of4.7 mm (n =- 40), while subsp. bre-
o L viaristata ranges from 3,2 - 4.2 mm, with a mean of
O.05 O.6-1.0 l.1-IS 16-2e 2.1-2S 26.30 31-35 3.6.4e 3.6 mm (n = 120), The spikelets of subsp. bre-
A-nlength(mm)
viaristaia are distinctiv eshloyrter than those in
FIG .1.Distributi oannd frequcn cofyawn lengt hin Arundinella subsp. riparia (t-t eP<sOt.,OOO1).
rrparla,
1arg ecircular cell layer sbetween the Kranz sheath Habitat and distribution
and upper epidermis (Fi g3.C) and that A. riparia Both subspecies ofArundinella riparia are rheo-
does not have well-developed larg ecircular cells, phytic and grow in clusters on rocky rive branks that
Kyoda (198 8ex)amined fiv esamples ofA. riparia are commonly inundated after flas hflood sfbllowing
(a sA. hirta var. riparia) includin ag sample from heavy rains (Fi g5.).
Shikoku (KDc hPiref C Ocin 81118), Fig. 3A shows Thc distributi oofn the two subspecies of
the cross section of a lea fof subsp, breviaristata. Arundinella riparia diffe r(sFi g6,); subsp. riparia
The anatomical featur earse very similar to those of occurs on the Kii Peninsula ,Shizuok aPrefecture,
subsp. riparia (Fi g3.B), although subsp. bre- Honshu, and on part of Shikoku, while subsp. bre-
viaristata sometimes has smaller circular cells, viaristata is restricted to Shikoku.
Arundinell ariparia subsp. breviarist aits aobvi-
Conclusion
ously differen tfrom A. hirta and very similar to
A. riparia subsp. riparia in the anatomical char-
acteristics of the lea£ Bccause the anatomical featur eosfthe leaf and the
The number of sclerenchymatous cells of the shape of the rhizome obviously diffe rfrom
leafmargin was not significantly differe nbtetween ArttndineU hairta s,ubsp. breviarista tias best treat-
the three taxa (Fi g3.D-F), ed a subspecies ofA, hirta .Arundinella riparia is
therefbre a species composed of two subspecies,
S2)ikeletlength subsp, riparia and subsp. breviarista Btoat.h taxa
The spikelet lengt hofArundinella riparia has been are remarkably similar, but diffe rin awn length,
reported to show wide variation as fo11ow s5: - 6 mm spikelet lengt hand distribution.
(Hond 1a929) ,4 - 5.5 mm (Osad a1989) ,3 - 3.5 nmi
(Koyam a1980) ,and 3,5 - 4.5 mm (Environmen t [faxonomy
Agcncy ofJapan 2000). In this research, I examined
specimens ofA. riparia subsp. riparia in the majer Arundinella riparia Honda in Bot. Mag. (Tokyo)
NII-Electronic Library Service
TThhee JJaapapnaesneSeosciee tySociety ffoorr PPllanatnSyts teSmaytsictsematics
68 APG Nlo1 .57
FIG .2, Rliizomc ofArundinella ripa,'ia and A. hirta A.: A. tiparia subsp. breviarista (taX ll)arag 1iI1003005, TKPM). B: A.ripat'ia
subsp. ril?aria (X fharagi 041O0400i, TKPM). C: A, hirta (M Jbaragi 161O0300J, TKPM). Bar = 1cm,
rlbkyo,
43: 192 <1929 H)o;nda in J. Fac. Sci .Univ. Arttndinella hirta subsp. riparia (Honda )T.
Sect.3Bot.3:31O(1930O)s;ada,IllG,rass.Japan: Koyama, Grasses Japan: 488 (1987)S.ynmpes:
662 (19g9 A)r,undineUa hirt avar. riparia (Honda)NARA, Yoshine-gun. Se, Totukawa-mura, M/
Ohwi in Acta Phytotax. Geobot. 10: 271 (1941).Hbnda s. n. [1 9Aug 1928] (TI )W;AKAYAMA.
NII-Electronic Library Service
TThhee JJaapapnaesneSeosciee tySociety ffoorr PPllanatnt SSyystsetmaetmicastics
Apnt 2006 IBARAGINew subtspeuLs ot Arundtnell anpanta 69
mnv1.'l tlIlIWt ne vt
tt
'
'
"sIvl*ii
i
t$.Il
IIIsul
rny '}
eq
ll: l//IX.w
l,:ll,,#
lllee,l,i
F ii,el:t}
tge"t i:nv
FIG 3 A C TransLers ebeLtions at thc broadeg tporti oofnleaf A Ai t{ndtnelkt roparia subsp breuanstata (T inobe y n 30 Sep 1973
TKPM) B A rrpaiia subsp rrpaJta (At Qfgcnv a07631 TKPM) C, F A hirt a(Y Jhaiag i16]O03001, TKPM) D F Transverse
scLtiolls showing the edge efthe leaiv esD subsp bpuvianst a(t} aIbaragi fllO03004 TKPM) E, subgp itpana (Y lhaiagi
04100400JTKPM)
arrow,urtular Lctl
Doro, N Ul r2 (TI) ss r
Rhizomes usually not elongate horiLontal lwiyt,h s-
scales Culms 9 - 62 cm tall ,tufted, Leaves bdbal
"gfiveoo=R6T-}
and cauline, bladc O5-43 cm long ,2- 10 mm 4S -
wide, 1inear ,herbaceouts ,whitish grccn, margins
scabrous and long pilose ,apex gradudlly dcumi- 4r
nate, 1igul cea O 5 mm long ,membrdndceous, mar-
gins cilidte or dentat et,runcate, ledf sheath epen, 3S
glabrous Panicle15-24 cm long, exserted, ereLt
or somewhat inLlmed apicallM lanceola ttoe lmedr in 3
]oose,
outline, inflorescence axis scabrous on angles
at leas atbovc middle, brdnches scal)rous, suberect to 2S u' LLsubsp
subspbrevrarrstata riparia
spreadmg, bearing spikelets trom basc, pedicelg
scabrous Spikelet s3 2 - 5 mm long ,2-flowered, F["4 Variation Tange of spikelet lengt hin subspecies of
glumes equal in shqpe, narrowly ovate to lanceolate, rirundtnel Jrarparta
NII-Electronic Library Service
TThhee JJaapapnaesneSeosciee tySociety ffoorr PPllanatnt SSyystsetmaetmicastics
70 APG Vbl. 57
Key tothe Subspecies
SpikSpi k4e.l5e-t 5msm long ;awn oflemma O.9- 4mm long ,geniculat eor not "''"""'""''' subsp. riparia
elets 3.2-4. m2m long ;awn oflemma absent er to 1 mm long ,not geniculate"' subsp. breL,iaristata
Figs.2B,3B & E,6.
apex acute or acuminate, chartaceous, glabrous, subsp. riparia,
smooth; lower glume 2.5 - 5 mm long ,nerves 3 or 5, Culms 53 - 62 cm tall L.eafblade s7 - 43 cm long,
3,4-4,7 long, 2- 10
midnerve scabrous; upper glume mm mm wide, glabrous or sparsely pilose with
5; lemma 3,5-4,3 long, 3 long hairs both Panicle1O-24
nerves sterile rnm nerves soft on surfaces. cm
or 5, chartaceous; sterile palea slightly shorter than long ,Spikele t4s,5 - 5 rnm long ;glumes lanceolate,
steril elemma, keel smooth or scabreus, thini ychar- apex acuminate, chartaceous, glabrous ,smooth;
taceous; anthers 3, 1 mm long ,ligh otr dark brown; lower glume 3 - 5 mm long ,nerves 5; upper glume
fenil elemma 2.6 - 3.3 mm long ,nerves 3, lanceo- 3.5 - 4.7 mm long ,nerves 5; sterile lernma 3.5 - 4.3
late ,chartaceous or coriaceous, glabrou sap,ex acute mm long ,nerves 3 or 5; sterile palea slightly short-
or acuminate, awnless or awn to 4 mm long; awn er than sterile lemma, smooth or keel scabrous;
scabrous, straight or geniculat ec;allus densely fenil elemma 2.6 - 3.3 rnm long ,nerves 3, charta-
pilosc ;ferti lpealea 2.6 - 3 mm long, 1anceolate; ceous, glabrous a,pex acuminate; awn O.9 - 4 mm
anthers 3, 1 mm long, ligh tor dark brown; lod- long, scabrous, geniculat eor not; ferti lpaelea 2.6 -
iculcs 2, transparentl caryopsis i.3 - 1.7 mm long, 3 nmi longl caryopsis ca, 1 .7 mm long, ligh tbrown.
light darkbrown. lapanese Migiwa-todashiMbiag,iwagaya
ellipsoid, or name:
FIG. 5. Habita tand habit ofArundineila riparia subsp. breviarista tAa:. Habitat (Oc t1 .3, 1 999, Ohboke, Yamashiro-cho, Miyoshi-
gun, Tokushini aPre£ Japan) .B: Habit (Oct 1,1, 2003, Ohboke, Yhmashiro-cho ,Miyeshi-gun, Tekushima Pref iJapan),
NII-Electronic Library Service
TThhee JJaapapnaesneSeosciee tySociety ffoorr PPllanatnt SSyystsetmaetmicastics
April 2006 IBARA(1I: New subspecics ofAretndinella riparia 71
Distributio nJ:apan (Honsh &u ghikoku). 7itshir os, n. [2 5Aug 1928] (TNS) D;oro, S. St{zuki s. n.
SPecimen sexamined: SHIZUOKA. Tenryu-shi. [7 Aug 1935] (TNS) D;oro, Z Goshima s, n, [Aug 1927]
Near Kashima bridge,Kashima,Futamata-machi,X (TI)D;oro, [02Aug 1940](TI);
coilector tinlaio,vn s. n.
&tgimoto s. n. [1 9Aug l953] (TNS) M.IE. Kumano-shi. Doro, T Makino s. n, [192 2(]MAK) ;Doro, Kumano
Ohidani, Isato-cho ,Z Kbide s. n. [1 8Aug 1932] (KYO), river, S, Stikaguc h3i8 (MAK) ;Dorohaccho ,KL Inagak is,
Minamimuro-gun. Ninkcu'im as, n. [1 1Aug 1931] (TI);n, [da tuneknown] (TI )D;orohaccho ,eollector unknown
Kamikawa-rnura ,Ml Honda s. n. [2 3Nov, 1952] (TI);s. n. [26 Aug 1925] (MAK); Miyai - Yunomine,
Kizuro, Kiwa-cho ,Nbhai 5465 (KYO); Kizuro ,Kiwa-cho, Kumanogawa-cho, G. Kbidzumi s, n. [Ju 3l0. 1922]
T &.E lamazakiI359(TI)Mt;.[IlaLmao-kDiorohaccho, (KYO)T;bnagodaniKurnanogawa-choG,.imiuta33744
Kiwa-cho, G. 1foideum is. n. [28- 2J9ul 1921] (KYO); (KYO) ,Shingu-sh iS., Shrzu ksi. n. [2 9Sep 1929] (TNS);
Nunobiki waterfa11, Funada, Kihou-cho ,G. 7Vbka i5565 M Satake & S. Okto,ama s. n. [1 1Oct. t942] (TNS) T;
(KYO) ;Nunobiki waterfa11, Funada Kihou-cho ,T Kbide Mdldno s. n. [Se p1924] (MAK) ;Mt. Kamikura ,S Slauld
5S2 (,KYO )Nu;nobiki waterfall, Funada. Kiheu-cho ,Z. s. n. [12 Aug 1935] (TNS) S;hingu IN [Ui s. n. [2 9Sep
1lrshi rs.o n, [0 6Aug 1933] (KYO) ;Ogawaguchi, Kiwa- 1929] (TUS) ;[fanago-dani ,alt. 200-400m, G. imrata
cho, M. Ciga}t, a07631 (TKPM); OgaxJaguch iK,iwa-cho, 33744 (TNS) T.bnabe-shi. T Mtikinos. n. [193 1(]MAK).
M. (2gau,a07632 (TKPM);Ogawaguchi, Kiwa-cho, M KOCHI. Nanogawa-mura, C. Oda 81118 (TNS),
Ogawa 07634 (TKPM) ;Ogawaguchi, Kiwa-cho, M/ Cultivated .Nishinomiya-sh iC.ultivate dT, MIikino s.
Ogawa 07635 (TKPM) ;Doro kyou, Kiwa-cho, an open n. [Oc t1936] (MAK).
rocky place alQng the water coursc ofthe Kitayamagawa,
K ZYuchiya 1224 (KYO) .Tlaki-gu nM.iyagawa-mura, subsp. breviaristata Ibaragi, ,subsp. novL, Figs.
Shimomate, on rocky bank of the Miyagawa River ,K 2A,3A&D, 4,5,6,7.
Seto 15694 (KYO).NARA. Shimokitayama-mura,
Iken ogo river , T Kbdu ma 9759 (TNS) [;[bd a[Ibtsukawa- Arundinella hirt avar. riparia. auct. non (Honda)
Ohwi:Abe. Tbkushima Ken Shokubutu Shi:266
mura, G.Miirata&.H/1<Q},am2a0171(TNS)[;Ibtsukawa
river, J Sugimoto s. n. [8 Aug 1966] (TNS) w,nKAYA- (1990).
MA. Along the Kumano river Z, S7iimiz 7u7166 (KYO); A typo aristis spiculae brevissim idsiversa.
Higashimuro-gun. Doro, Z Makino s. n. [Se p1924] 7]Vpu sJ:apan, Tokushima Pref, ,along the
(MAK); Doro, colleetor unknown 5 (MAK); Doro, Z. Ybshino River,Yamashiro-cho, Miyoshi-gun, 11
i
JapanSea 135'" E
oQ
/1
-y-k]"
p t /
v
-3
"x{'A
t
i r,'
ts,
`
odi"
Oo
.iV
PacificOcean
, ,,tt
-leokm
Fic }6.. Distribution map ofAntndinella riparia subsp. riparia <A) and subsp, brevia"ista (tae),
NII-Electronic Library Service
TThhee JJaapapnaesneese SSooccleityety ffoorPrl anPtlSyastnetma tSlcysstematics
72 APG Vbl 57
Ki,"l/el
lll#,,
vek fi#lku tSik}l{: lleeew l:s /llllwa i* tsww,
,ililgeiii
ewli
i
llllima!' Ilf ii ll:w'g wslll
melll
l
em::Ii,,,
x
eeI uttsbel,i,,seex
}im IIagMM
e va ma xx mo ts ee
}lngI liwata ws pmn t,rwutwwS rkptmablwwew
eq.
gelkilies,IIIee tw l # "ge imha,il wa m eiilt w･,lIZ#,ji,est.lnd.inii:''il
,ilkthil} wwk
p a x x･ ,,,k '"maiva' "ag,i twt{i, 'i'eE{ieeee'
ynyl{/ tii lll 4 "w"wn ! tl,. L E k.za"e l{ll
a g t ,ger , nlnmvpm} boLZIke wh:
S ll l im ia , ,II{ I}ekwlee er･lm er;lnm}]/bu. tw .l,jwwwa ,v essttimeawS{ Li;nw}lhps Srk.illfsX,ijsi #g,sket}effSellveelailmllava
di Me- wa #: tma xmuet/l}/ wua Ill ? lllee :･･ii{}l: gerlm:'m: l/$l: !# lf i#SeIeYp,m'f fm ui,ki'i`tult'sasw',. awf,leawtlgl d eil,
! kzamaL X
ww / /l/ i: ifi#"' ,iwatiklg, ,imha/lli i ii//k}l m yi/li $-ies'il i///h}/lige igz/iwa.ii
w h /itlMee t
FTe 7 Helotvpe ofAntndinella trpaJta subsp breuanstata (} 'lbarag tflfO0300S, TKPM)
NNIII-IE-leEcltreoncitcronic Library Service
TThhee JJaapapnaesneSeosciee tySociety ffoorr PPllanatnt SSyystsetmaetmicastics
April 2006 IBARAGT: Ne", subspecLes ofArundinelia riparia 73
Oct 2003, X lha,zrg Ii11003005 (holoty TpKPeM-) facilit ifebsr study at their instituti oIn asm, also gratefu1
to Mr. S. Kinoshita ofNaruto City ,[Ibkushim aand Dr.
Culms 9-57 cm tal lL.eafblades O.5-18 cm long, 3- Siro Kobayash iof the Kochi Prefectura 1Makino Botanical
Garden for inforniation
7,5 mm wide, sparsely pilos ewith iong hairs on givrilnbgl mccus hima about rheophytic
both surfaccs. Panicle 1,5-2 2cm long ;SpikeletsAirntdtenbdtie ndteo l Mliran, D. J. Viery aanndd MKro.c hMi, pKreeezfiencgt uforr e Ics r.iatmi-
3.2-4.2 mm long; glumes narrowly ovate, apex cally reviewing the manuscript. I would like to thank the
acute or acuminate, chartaccous, glabrou ss,mooth, anonyinous revicwers fbr their valuable suggestions on
with pronounced nerves; lewer glume 2.5-3. 3mm impreving the papcr.
long, nerves 3 or 5; upper glumc 3.4-3. m7m long,
References
nerves 5; steril elemma 3.5-3. i6nni long ,nerves 3 or
5; sterile palea nearly equaling sterile lemma, keel
scabrous; ferti lleemma 2.6- 3mm long ,ncrvcs 3, Abe, C. I990 .Tokushima Ken Shokubutu Shi. 580 pp.
coriaceous, glabrous ,apex acute, awnless or awn to Kyoiku Shuppan, Tbkushima, (i nJapanese)
1 mm Long, scabrous; ferti lpealea 2,6-3 mm long; E n v iroofn mJeanpta nA g- eRnecdy odfaJtapa abnoo k2 020n0d, Tehd.r evaejt.e n8e. d"6'i6ld0lpifpe.
caryopsis ca,1,3 mm long ,dark brown. Japan wildlife research center, Tokyo. (i nJapanese)
.lapanese name: Ohbokcgaya Helmgren, P. K., N, H. Holmgren & L.C. Barnet t1,990.
Distrihuti oJna:pan (Shikeku). Indcx Hcrbarionim Par t1 : Herbari aof the wor]d. cd.
Additionat specitnen esxamined: TOKUSHIMA. 8. Ncw York Botaiiica lGarden, Bronx.
Miyoshi-gun, Along the Ybshino rive rY,amashiro-cho X, Honda, M. 1929 .Nuntia ad flora mJaponiae II .Bot. Mag,
ibaiugi 111003004 (TKPM); Ohboke, Yamashiro-cho Z, R ) kvvo 43: 189-193.
7Zibuch si, n. [2 5Sep 1997] (TKPM); On thc rock of Ishi iH, Y Akasawa, M. Ogawa, S. Kinoshita, T. fabuchi
Ohboke vallcy, Yamashiro-cho ,C. Abe 33341, 33342 & K. Morimoto (eds .2)00.1. Tokushima red data
,
33343 (TKPM) ;Ikcda-eho. At the side ofLake Ikeda, M book. 438pp, 1[bkushima Prefecturc , Tokushima,
ibaFugi 111003001 ,fllO03002 ,111003003 (TKPM); (i nJapanese)
Ydshino river, S. 7lrkciji {nl. i[s1. 5Aug 1983] (TKPM); Koyarnu ,T. 1980 .Gramineae .bi: Kitemnu rSa. ,G. Murata
Minawa, Ybshin oriver, Z Inobe s. n. [3 0Sep 1973] & T, Koyama, Colored Illustrati oofnHserbaceous
(TKPM) ;Nakanishi ,Yoshino river, X lbaragi & M/ Plant sofJapan 3 (Monocotyledo nreeviasced ) ,cdi-
Oga"?a 13IOOI (TKPM) .KOCHI. Nagaoka-gun. tion ,pp. 303-390 .rloikush aPublishin gCo., Ltd.,
Sakamoto, Z Kohkami et aL FOK-049366 (MBK); Osaka. (i nJapanesc)
Tosashimizu-shi. Masuno river, Oftiji-ga-todo rMo, . 1 987. Grasses ofJapan and its neighboring regions,
Kbhkanii 9524 (MBK); Hata-gun. Eshi ,lttisho-c hAoC, an identifieat miaonunal. Kodansha Ltd. Tokyo,
1(tiroi iet･ avLa FOK-062669 (MBK); Ybshikawa, Taisho- Kyoda, K, 19S8 .A study on leaflbla dacnatomy in the
cho, ,M Kitroiw eat al, FOI(L062397 (MBK): Saga-cho, N Japanes eAf'ttndinel l(aGramineae B)u.ll .Natl ,Sci,
1<l{,z} ietw aaL FOI<-04I263 (MBK). Mus., Tbkyo, ser. B. 14{1): 1-7.
Ohwi, J. 1941. Gramina Japonica 2. Acta Phytotax,
I would like to thank Dr. K. Kyoda and Dr. H. Ohashi for Geobot ,10: 261-274,
their valuab]e suggcstions on improving the paper, I wish Ohira ,Y. 2004. Shikelcusa nshokubutsu tanpoh (4),
to express my thanks to Dr. M. Suzuki of Tohoku Kochiken no shokubutsu. 18 :131-140 .(inJapanese)
University ,Dr. T, Nemoto of Ishinomaki Senshu Osada, T. 1989. Illustra tgerdasse sofJapan. Heibonsha
Universit aynd to Dr. Y/ Ohmori of the Yokosuka City Ltd.. Publishers .Tokyo. (i nJapanese)
Museum for kind advice on methods ofanatomical obser- Tateoka, T. 1969. Arttndinel lraipai"ia and A. hirta
vations, Thanks are due to the curators and stafTS ef (Gramine aBeul)l.. Natl. Sci .Mus.. Tbkyo. 12 (4):
KYO, MAK, MBK, TI, TNS and TUS fbr providing 845-850.
ReceivedMbtyl2,2005,; 23,2006
accqptedJLinttap:y
NII-Electronic Library Service
