GRAMINEAE juss. (Poa.) 333 



basim et ramificationes pilosis; spiculis lineari-lanceolatis, 8-20- 

 floris; flosculis obtusis, ncrvo latcrali prominente; vaginis pilo- 

 sis ; radice fibrosa. Mert. et Koch. Eragrostis poaeoides Beauv. 

 Agrost. 74» Boem. et Schult. Syst. 2. 574. Presl. in Bel. Hacnh. 

 1. 278. Trln. in Act. Petrop. 6. 1. 404. (excl. var. a et y.) 

 Eragrostis poaeformis Link. Hort. 1. 188. — Europa media et 

 australis, Caucasus, Sibiria, Barbaria, America borealis, Mexico, 

 India oricntalis. 



57. P. Brownei Kunih. Gram. 1. 112. Panicula patente ; 

 ramis altcrnis, strictis, subsimplicibus 5 spiculis lanecolatis, 10- 

 lS-floris; perianthii (trinervii) valvula exteriore glabra ; interiore 

 ciliata; floribus triandris ; foliis subinvolutis vaginisque glabris ; 

 collo barbato. Brown. P. . polymorpha Brown. Prod. 1. 180. 

 Megastachya polymorpha Beauv. Agrost. 74. Boem. et Schult. 

 Syst. 2. 594. 



a) spiculae subl8-florae, purpurascentes vel pallidae; 



paniculae rami patentes, parum divisi. 

 (i) spiculae sublOflorae, nigricantes, nigro-cinereae; pa- 



niculac rami patentcs, simplices. 

 3) spiculae suM2-florae, lineares, nigro-cinereae ; pani* 



cula coaretata, elongata, raniis erectis, paucifloris. 

 8) spiculae 12-20-florae, lineares, pallidae; panicula co- 

 arctata, ramis subpatentibus, brevibus. 

 — Nova Hollandia. — Brown. huc ducit cum ? Brizam Era- 

 grostidem Linn. Nees ab Esenbeck] Cum P. mexicana conjungit, 

 Trinius cum P. bahiensi. 



58. P. rufescens Schrad. in Schult. Mant. 2. 319. Cul- 

 mis adscendentibus, subramosis ; foliis basi pilosis ; panicula ra- 

 mosa, contracta; spiculis oblongo-linearibus, multifloris; valvula 

 corollae exteriore ovata, breviter acuminata, trinervia ; interiore 

 persistente. Schrad. Eragrostis ? rufescens Schult. Manl. 2.319. 

 Link. Hort. 1. ISS. Trin. in Act. Peirop* 6. 1. 399. Eragro- 

 stis inconstans JYees ab Esenb> in Mart. Bras. 2. 495. Poa cus- 

 pidata Both. JYov, Spec> 72. Megasiachya cuspidata Schult. 

 Mant. 2. 329. ^Calotheca cuspidaia Spreng. Syst. 1. 348. Era- 

 grostis floribunda Schrad. in Schult. Mant. 2. 319. Trin, in Act. 

 Petrop, 6. 1. 399. — Brasilia. 



59., P. MEGASTACHYA Koel, Gram, 181. Schrad. Gerin, 1. 

 288. Humb. et Kunih. JSov. Gen. 1. 158. Mcrt. et Koclu Germ. 

 1. 597. Panicula aequali, patente; ramis inferioribus ad basim 

 et ramificationes pilosis; spiculis lineari - oblongis (majoribus), 

 15-25-floris; flosculis obtusis, subcmarginatis, breviter mucro- 

 natis, nervo laterali prominente ; vaginis glabris, orc pilosis ; ra- 

 dice fibrosa. Mert. ei Koch. Poa Eragrostis Cav. Ic. 1. 63. 

 Briza Eragrostis Linn. Spec. 103. Schreb, Gram. 2. t. 39. Vahl. 

 Hymb. 2. 20. Hoffm. Germ. 32. Boih. Germ. 1. 40. 2. 110. 

 JVilld. Spec. 1. 405. Eragrostis mcgastachya Lhik. Ilori. i. 

 185. Eragrostis major Host. Gram. 4. t. 24. Megastachya Era- 



