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DIAi^^DRlA DIGYNIA* 33 



mate buds Ufo flowered^ 1 sitting, I pedunculate, both androgynous. 

 CalffXj exterior valve lanceolate, slightly acuminatej the back flatten- 

 ed, the angles near the summit serrulate, summit bifid; interior valve 

 shorter, compressed, very acute, the back serrulate, the hair at the 

 base about twice as long as the calyx. Corolla unequal, shorter than 

 the calyx, tinged with purple; the exterior valve larger, very acute, 

 membranaceous ; the interior much smaller, the point terminating in sl 

 scabrous awn 4 — 6 times as long as the calyx. Filmnputs 2, lon^^-er 

 than the calyx, capillary. ^/^i^iA^rs bright yellow, Gf^nn oblongs 

 Styles 2, shorter than the calyx. Utigmas feathered, purple. 



Grows in wet ground and in shallow stagnant water. 



Flowers September— October. FojB^tail Erianlhus^ 



S. Brevibarbis. Mich. * 



E. panicula sub-paten- I Panicle rather spread 

 te; viliis invokicrantibiis | ing; hair like involucruir 

 calyce brevioribus; aris- [ shorter than the c^ly 

 lis rectis. E. 



Mich. 1. p. 55, 



straig 



ba 



Stem 5 — 5 feet high, near the panicle scabrous and a little hairy,. 

 Upper joints bearded. Leaves lanceolate, 1^ — H feet long, 5 — 5 lines 

 broad, somewhat scabrous, hairy at base; sheath shorter than the joints, 

 glabrous, the throat contracted, hairy. Stipule membranaceous, la- 

 cerate. Flowers in a crowded oppressed panicle, I — 2 spikclets 

 from each bud. Calyx^ valves nearly equal, hairy alonj^ the margins^ 

 nerved, dark purple, the nerves frequently spinous* Corolla^ valves 

 purplish, edges of the valves hairy; the interior valr^ terminating^ in 



a scabrous awn 2 or 3 times as long as the calyx, •Snth 



Stipnas feathered purple. 



Grows in dvy and damp ground (not inuftdated) ifidiacriminately* 

 Flowers September — October. Short bem^ded Erianthiis. 



posed 



of 



teeth. 



membranous valvule j valvules lanceolate, twice th^ length of th<i 

 nectaries. 



3. Strictus. Baldwin. 



E. involucro brevissi- [ Involucrum very short 

 iifio vel ; panicula arete | or ; panicle closely ap- 

 appressa, ranuilis remo- | pressed, the branches re- 

 tis; pedunculis bifloils ; mote ; peduncles two 

 aristis rectis, calyce duplo | flowered; awns straightj 

 longioribus. B. ] twice as long as the calyx. 



