1/4 MONOCOTYLEDONS.-— CYPERACEJE. CttVeO'. 



pressed, sheaths leafy, spikelets terminal geminate, involucrum 

 l-le,ived. p. 19. — Wai gravelly places. 

 tt Culms triangular, 



8. So. marilhmis^ culm leafy, spikelets terminal clustered pe- 

 dunculate and sessile, involucre of many foliaceous leaflets, 

 scales with a niucro between the acute segments of a notch. 

 /;. 19. — Salt marshes. 



9. Sc. sylvaticiis, culm leafy, cyme terminal many times com- 

 pounded, involucrum of many foliaceous leaflets, scales entire 

 acute, p. 19. — fVel woods. 



4. CLADIUM. 

 Scales imbricating the spikelets on all sides; outer ones sterile. 



Slam. 2. Style 1 . Fruit a Nut with a loose external coat 



(Kpicarp.), destitute of bristles at its base. 

 1. C\. -]\']ar/'icns, panicle much divided leafy, spikelets capitato- 



glomerate, cuhn rounded leafy, margins of the leaves and keels 



rough, p. II. — Bogs, very rare. 



5. CAREX. 

 Generally monoecious. Scales imbricating the spikes on all sides. 

 Barren Jlowers. Peria?ithO. Sta7n.3. Fertile /lotvers {in 

 the same or on diflferent spike). Perianth monophyllous, ur- 

 ceolate, surrounding and concealing the ovary. Stigmas 2 — 3. 

 Nut or Acheimim included in the enlarged perianth. 



* Spike simple, solitarij, the upper part for)ned of sterile, the lower 

 of fertile flowers (except in C. dioica and Davalliana, which are 

 dioecious). 



1 . C. dioica, spike simple dioecious, fruit ascending ovate shortly 

 acuminated striated rough at the margin upwards, p. 260. — 

 Mountains. 



2. C. Davalliana, spike simple dioecious, fruit ovate much acumi- 

 nated recurvato-deflexed smoothish at the margin, p. 20. — 

 Alpine Logs. 



3. C. pulicaris, spike simple androgynous, flowers few, fruit 

 distant oblongo-lanceolate acuminate reflexed, stigmas 2. 

 p. 261. —Bogs. 



4. C. paucijlora, sj)ike simple androgynous of very few flowers, 

 fruit distant lanceolato-subulate patenti-reflexed, stigmas 3. 

 p. 261. —J/ps. 



** Culm divided upwards into several spikes, which are sessile, andro- 

 gynous, with a subamplexicaul bractea at the base, and flowers uith 

 two stigmas. 



■\ Spikelets sterile at their extremity (except in C. arenaria and C. iii' 



ter media.). 



5. C. incurva, spikelets sterile at their extremity collected into 



