254 GRAMINEAE juss. (Pappophorum.) 



PAPPOPHORUM SCHREB., liROWN. 



Spiculae bi- quadriflorae ; flore infimo hermaphrodito ; su- 

 perioribus tabescentibus, sterilibus. Glumae 2, membranaceae, 

 muticae, flores superantes; inferior brevior. Paleae 2, mem- 

 branaceae; inferior subelliptica, concava, 9-13-aristata ; aristis 

 subulatis, rectis, cum palea continuis; paiea superior longior, 

 bicarinata. Stamina 3, rarius 2. Ovarium glabrum. Styli 2, 

 terminales. Stigmata plumosa; pilis denticulalis, simplicibus. 

 Squamulae 2, glabrae, truncatulae. Caryopsis glabra, paleis 

 obtecta, libera. Gramina vix extra tropicos provenientia. Pa- 

 niculae coarctatae, spicaeformes. 



1) Spiculae 2-florae; palea inferiore 9-aristata ; glumis 3-7-ncr- 

 viis. (enneapogon Desv.) 



1. P. cenchroides Lichtenst. in Roem. et Schult. Syst. 2. 

 616. Trin. in Act. Peirop. 1830. 1. 92. Thyrso cylindraceo, 

 subelongato; glumis pilosulis, 3-nerviis; subulis valva duplo lon- 

 gioribus, ad medium usque plumosis. Trin. — Cap. b. spei. — 

 Thyrsiis nigricans. (Trin.) 



2. P. phleoides Hort. Madrit. Trin. in Spreng. JV. Entd. 

 2. 73 et in Act. Petrop. 1830. 1. 91. Thyrso ovato ; glumis ad 

 carinam piiosulis, 3-5-nerviis; subulis valva subsesquilongiori- 

 bus, paulo supra mcdium usquc plumosis. Trin. Enneapogon 

 pbleoides Roem. et Schidt. Syst. 2. 616. — Arabia felix. 



3. P. NIGRICANS Brown. Prod. 1. 185. Trin. in Act. Petrop. 

 1830. 1. 91. Aristis 9, plumosis ; spica composita, subcylindra- 

 cea; lobis imbricatis ; glumis tenuissime pubescentibus ; foliis 

 vaginisque glabris, scabriusculis. Rrown. Enncapogon nigricans 

 Desv. Journ. de hot. 1813. 70. Rmuv. Agrost. 82. Roem. ei 

 Schult. Syst. 2. 616. — Nova Hollandia. 



4. P. PALLIDUM Rroivn. Prod. 1. 185. Kunth. Gram. 1. 279r 

 /. 51. Trin. in Act. Petrop. 1830. 1. 92. Aristis 9, plumosis ; 

 panicula spicaeformi, c^lindracea, conferta; foliis molliter pubes- 

 centibus; glumis molliter pilosis. Kih. Enneapogon pallidus 

 Desv. Journ. de boi. 1813. 70. Reauv. Agrost. 82. Roem. et 

 Schult. Syst. 2. 615. — Nova Hollandia. 



5. P. PURPURASCENS Rrown. Prod. 1. 185. Aristis 9, plu- 

 mosis, coloratis; spica lobata, lanceolata; ramis alternis, race- 

 mosis ; glumis foliisque pubescentijbus. Rrown. Enneapogon pur- 

 purascens Desv. Journ. de hot. 1813. 70. Reauv. Agrost. 82. 

 Roem. et Schidt. Syst. 2. 615. — Nova Hollandia. 



6. P. GRACILE Rrown. Prod. 1. 185. (v. s.) Aristis 9, plu- 

 mosis ; spica infra divisa, apice simplici ; glumis pubescentibus ; 

 foliis involutis culmisque glabris. Rrown. Enneapogon gracilis 



