26 ANGIOSPERM^. 



little economic value. 6 Tribes, of which only typical genera are 

 given here. 



Tribe 1. Caricinese. — 1. Carex, Sedge. <^ or J^ g $ ; ? with 

 a perigynium. Culm triangular. 1000 species. C. ripdria. j^ ; 3°- 

 6° high, borders of streams and ponds. Bur. Fl., Fig. 54, A. C. 

 bullata, (P ; w^ spikes 2-3, on a long peduncle ; ^ spikes 1-2, oblong 

 or cylindrical, stout, on a short peduncle ; perigynia turgid, shining. 

 Culm 2° high. Swamps, N. Eng., south to Fla. and W. 



Tribe 2. Sclerieae. — Fls. diclinous. 1. Scleria, Nut-Eush. 

 ^. Akaine bony. 149 species, l°-3° high, in or near southern tropics; 

 several in U. S. 



Tribe 3. Rhynchosporeae.— Fls. J> 8 $. Perianth of 6-10 

 bristles, or 0. Akaine often beaked with the Dase of the style. 1. Rhyn- 

 chospora, Beak-Eush. Spicate panicled or clustered. 121 species. 

 N. and S. Am. 8. Clidium, Twiq-Etjsh. 21 species, chiefly in N. 

 Holland. C. mariscoldes, l°-2° high ; spikes in cymose hds; Akaine, 

 Fig. 54, B. Bogs, N. Eng. to Del., 111., northward. 3. Dichromena 

 latifbUa, Star-Sbdgb, 1°-2° high. Infl. a terminal .hd. with long in- 

 voluoral radiating Ivs. whitened at base. Ponds, N. Car. to Pla. 



Tribe 4. Hypolytreae. — Pis. § i ™ hds. or cymose panicles. 

 1. Hypblytrum. Species native of Brazil, "W. and B. Ind. 2. Kyl- 

 lingia. Pis. in hds. 50 species. S. Af, Australia, Brazil, XT. S. K. 

 piimlla, 2''-9' high ; Ohio to Fla. K. (Lipociirpha) maculdta, 2'-8' 

 high, Ivs. spotted. Ga., Fla. 



Tribe 5. Scirpes. — Fls. . SJ . Akaine usually beaked. Perianth 

 of scaly or hairy bristles, or 0. 1. Scirpus, Bulrush. Stem trique- 

 trous, or striate, or terete. Spikes sol. or capitate. Most of the once 

 numerous species have been distributed to other genera by Steudel. 

 Of those retained, 14 are British, several N. American. S. lac&stris, 

 Common Bulrush, 5°-8° high. Lakes, ponds, Eur. ; nat. in V. S. 

 and Can. 2. Eribphorum, Cotton-Grass. Bristles of perianth nu- 

 merous, elongating into a soft white wool. Several species, ornamental. 

 Eur. 



Tribe 6. Cyperaceae.— Fls. § . Perianth of hispid bristles, or 0. 

 Style deciduous. Spikes sol. or clustered. 1. Cypferus, 673 species, 

 warm parts of the world. C. Idngus, Galingalb ; Eur. C. esculen- 

 tus, CH-&FA, Grassnut-Sedge, rts. bearing tubers, edible. Eur. C. 

 Hi/dra, Coco-Grass, rts. bearing fine small tubers ; a pest of fields 

 and gardens. S. States. 2. Papyrus aniiqubrum (Cyperus Papyrus), 

 Paper-Reed. Stems 8°-10° high, leafless except at top, where the 

 Ivs. are long, involucrate, surrounding the umbelled spikes of fls. 

 Fig. 53. See Lesson X. Mediteri'anean States. 



R6stio Alliance. — Fls. g or diclinous. Perianth-segments 1-2-seri- 

 ate. Emb. extruded. Ova. usually 3-eelled. Fr. usually a capsule. 

 Perianth glumaceous, 4-6-merous. Sta. 1-3, free, or connate in a cup. 

 Styles 1-3. 3. Restiliceae. 4. Eriocaulonaceae. 5. Flagellariiceae. 



brd. 3. Resti^ceae. Eope-Grasses.^ — Lvs. long, grass-like. Herba 

 or Undershrubs; rhiz. creeping. Infl. spiked, racemed, or panicled. 

 Fr. a caps, follicle, nut. 24 genera; many species. S. Af., Australia, 

 tropical Asia. 1. R6stio, rush-like, leafless. Fls. diclinous. Many 

 species. R. tecthrum, used to thatch houses. Australia. 



Ord. 4. Eriocaulonaceae. Pipewobts. — Similar to Eestiacese. 

 Pis. diclinous. Infl. capitate on a tall scape ; hd. often white with 



