379 



CXI. TYPHACEJ]. 



Flowers crowded, monojcious. Barren Spikes or Heads above the fertile. Perianth of 3 or 

 more scales or bristles. Anthers 3. Style 1. Ovary superior, with a single seed. 



823. TYPHA. 



1. latifolia. L. linear, flat, as long as 

 scape. Barren and Fertile Spilies usually con- 

 tiguous, each cylindi-ical. Stigmas far exceed- 

 ing the setas. (Axis of the Fertile Spike with- 

 out hairs ; those at the base of seeds filiform, 

 very slender. Fr. ovato-oblong, Gode.) p. 

 6, 7. Still water. 



2. Shuttleivorthii. "L. linear, longer 

 than flowering culm. Spikes cylindrical, con- 

 tiguous. Fil. two or three times as long as 

 anthers. Fertile Fl. without bracts. Setas 

 reaching to the extremity of the stigma, p. 

 7, 8. In the Aar."— Koch. 



3. ^lauca. " L. linear, flat. Spikes cy- 

 lindi'ical, contiguous. Hairs at Base of Seeds 

 filLform, white. Stigma lineari-subulate. Fr. 

 acute at each end. p. 7. In a pool at VH- 

 lers-les-Nancy." — Gode. 



4. an^ustifolia. L. linear ; lower part 

 channeled ; as long as scape. BaiTen and Fer- 

 tile Spikes usually separate, each cylindrical. 



(Fertile Fl. usually with a filiform bract, 

 Koch.) (Axis of the Fertile Spike covered 

 with spatulate hairs, coloured at the tip, 

 Gode.) p. 6, 7- Still water. 



5. xuinima. L. of Flowering-stems lan- 

 ceolate, shorter than scape ; those of the bar- 

 ren shoots narrow Knear. Spikes separate -. 

 fertile elliptical, p. 4, 5. Beds of rivers. 

 s. e. Fr. Rhine. 



824. SPARGANHJM. 



1. raiuosuiu. L. 3 -edged at base: sides 

 concave. Stem branched. Stigmas Hnear. p. 

 7, 8. Ditches, Sfc. 



2. simplex. L. 3-edged at base; sides 

 flat. Stem simple. Stigmas Knear. p. 7, 8. 

 Ditches. 



3. natans. L. flat, floating. Stem sim- 

 ple. Stigma oblong (ovoid, veiy short, Duby): 

 Barren SpUie usually soHtaiy. p. 7, 8. Fools 

 and marshes, occ. 



CXII. CYPEEACEiE. 



Flowers glumaceous, disposed in catkins. Glume of 1 valve ; or if of 2 valves, the inner 

 valve, as in Cyperus, attached to the rachis, or, as in Carex, transformed into a bag, containing 

 the seed, and falling off wath it. In some plants there are hypogynous scales within the glume. 

 Stamens 3. Anthers entire at top. Ovary superior. 



825. CYPERUS. 



Stig- 



A. Spicules sessile, in a simple umbel, 

 mas 2. 



1. mucronatus. Involucre of 2 L. : one 

 much exceeding Spikes ; one very short. Spikes 

 2-3, lateral. Scape erect, round below, 3- 

 edged above. Root creeping, p. 6-8. Ditches. 

 Between Nice and mouth of Var. 



)3. cossyrensis, Guss. Spikes shorter. 

 Glumes more obtuse. 



B. Spicules forming a head. Stigmas 2. 



2. globosus. Head globose. Spicules 

 lineari-lanceolate, obtuse, flat. Glumes obtuse, 

 closely tiled. Invol. very long, of many L. 

 p. 6, 7. Between Nice and the Var. 



3. polystachyos. Culm naked. Head 

 compound. Spicules lanceolato-Kneai', acute. 

 Glumes subemai'ginate, mucronulate, with 1 

 or 2 nerves on each side of keel. Invol. very 

 long, with many spinuloso-cUiate L. p. 8. 

 Hot vapours. Ischia. 



C. Inforescence in a sort of Umbel. Rays 

 very unequal. 



i. Spicules in an umbellule or lax head. 



4. flavescens. Heads sessile and stalked, 

 in a sort of umbel, sometimes solitaiy. Spi- 

 cules lanceolate. Glumes obtuse. Stigmas 3. 

 Seeds black, subrotundo-lenticular, with amu- 

 cro. 

 7, 8. Marshy, m. and s. Eur. 



;S. Crussonii. Seeds bay. Pal. 



c 2 



1 or 2 L. of Invol. exceeding umbel, p. 



