bo 
a fal we J ag Sy 
mot A he em 
Key to UNGINIA, adapted from Kukenthal. — ae 
1. 
¥ 
R @ 
‘o 
& 
‘Spike narrow-oblong, j=2 em., somewhat dense, 
Spikes dense; shane sigma not arti- 
gulate... . . nn 
Spikes often lax; glumes “dec iduous, articue 
late a ae e ° ° ee 
Utricle hispid above and on margins :« « Be 
e e ® @ 2 w > -* es « * e® ¢® «¢ macrole} 1 3 
Utricle elabr: sus ‘ 3° 
Rhizome shortly stolon. @ spike gradually 
contracted; utricles sub-obovate oblong 
2 2 a e « « SUScO-varinata 
racy caespitae; "é\ spike long, g, abruptly ] 
ontracted . . » *  & 
Spikes not 7& os ‘Utriele ‘shortly’ stipulate 
Spikes 10=15 om. , utricle J Long- -stipulate. é 
opikes cylind., 2-4 om.; gi. ovate-obtuse, 
pl iple-chestnut, wide white margins, utricles 
about Fn slunes a. oo a pur urata 
Spikes linear-cylind., 6-8 : el. oblong~— 
lance colate, acute, straw-colrd., *narrow white 
margins, utricles hardly exceeding slumes 
etal Eat Se ey ce © + «© «© + GAeSpitosa 
Leaves red, spikes linear-cylind. 3 mm. glue 
ratner obtuse, utricles exceed. slunes, 
obsoletely neryed . .« « «6 «4 2 pedicellata 
Leaves green, spikes cylind., 5 mm. glumes 
actte; utricle IS = aeEe il: 2 Shin prominent : 
lateral nerves .. c ¢ @ uneinata 
Rhizome caespitose, put little elongate . 
Rhizome Long, st toloniferous + & * eee 8 
utricles lanceolate-elliptic, 2 oe latera 
Nerves . « « ‘ stris 
Spike elongate, “yather lax-fld, ae icles 
narrow-oblong, many nerved ...., . g 
Utricle se@abrid above .... Leptostach ; 
Utricle glabrous ... , : C 
Culm slender rapt Lys. much exceed. culm 
2 e 6 ° -« VK par ia 
Culms rigid terete, lvs, red, much shorter 
than culm. aor A 2  . ae. 
11. Rhizome hard, spikes dease~fld. rigabens es 
elliptic. .. .« eG € 
Rhizome thin, spikes “lax” ‘ 
12. Utricles laneeol. alte, 5h vite suber 
Utrieles 1 1.-Subulate, * steele 
Itric es anceo «Su ate "7 ‘nts. ne af 
obliquely patent .i.«.. 4 blitonais © 
