505 
Variat in aquis profandioribus major, «ulmis pedalibus et 
longioribus. 
Isol. rivularis Schrad. Anal. 19. t. 1 f.5. Kunth, 194. 
— I. palustris Schrad. 1. ec. 17. 1. 1 f. 7 (forma spienlis 
lateralibns). Sc. natans Spr. herk., non Thunb. -— IT. natans 
ß. N. ab E. herb. 
Prom. bon. spei. 
38. 9. conspersus Bckir. 
Rhizomate repente; eulmis numerosis fascieulatis Alifor- 
mibus, interdum setaceis, 3—-12 poll. alt. teretiusculis Jeviter 
compressis multistriolatis suleatisve (ex apice) quandoque pre- 
liferis; vaginis coloratis superne ampliatis foliaceo- cuspi- 
datis; spieulis 2 —8-xis terminalibus congestis Iato - ovatis 
pauei — multifloris 1-—2 lin. Jong.; involacro diphylio, phylio 
inferiore lineari crasso ohtaso capitulo sabduplo longiore, 
altero squamiformi vix foliaceo-apicato spiculam aequante; 
squamis membranaceis v. papyraceis ovatis v. orbicalato-ova- 
tis subcarinato-convexis obtusis mutieis v. mucronulatis ner- 
vosis ferruginescentibns purpureo-punctulatis; caryopsi minuta 
squama parum y. dimidio breviore obovata, v. ellipseidea aut sub- 
orbiculata, trinngulari, interdum paule compressa, mucronulata 
punctulata pallida; stylo erserto usque ad medium trifido. 
d. conspersa N. ab E. in Endlich, Flora Norfolk. 23. 
ins. Norfolk (Bauer). N. Holland (Leichardt). N. See- 
land (Cunningh., no, 136). Tristan da Cnnha. 
39. 8. diabollcus Steud. 
Rhizomate repente filiformi; culmis sebsolitarsis erectis 
12-6 poll. altis Aliformibus compresso-trigenis striatis versus 
basin (6—2-) foliatis; foliis ereetis Aliformibus canaliculato- 
teretiuscalis ohtusis Jaevihus, superioribus eulmo paule bre- 
Du 
