288 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
18. RH APHIS Lour.? 
Inflorescence a few-flowered panicle, the racemes reduced to a single joint 
of the rachis with a sessile perfect spikelet and 2 pedicellate sterile spike- 
lets (the latter sometimes obsolete) borne at the ends of slender naked pedun- 
cles, these disjointing obliquely near the summit, forming a sharp callus below 
the long-awned spikelets. 
1. Rhaphis pauciflora (Chapm.) Nash in Small, Fl. Southeast. U. S. 67. 1903. 
Andropogon wrightiti Munro; Wright in Sauv. Fl. Cub. 202. 1873, nom. nud. 
Sorghum pauciflorum Chapm. Bot. Gaz. 3: 20. 1878. 
Chrysopogon pauciflorus Benth.; Vasey, Grasses U. S. 20. 1883. 
A slender branching annual with flat or folded ciliate blades and a few- 
flowered panicle with capillary branchlets, the brown spikelets raised on a 
hairy callus of nearly equal length, the twisted bent awns up to 15 cm. long. 
Sandy pine barrens, Florida and eastern Cuba, the type locality of S. pauci- 
florum being Jacksonville, Florida, and of A. wrightii being Cuba. 
19. THEMEDA Forsk. 
Inflorescence a flabellate cluster of several racemes, each subtended by a 
leaflike spathe, the entire cluster (or panicle) subtended or partly inclosed 
by a larger spathe; racemes consisting of 2 approximate pairs of sessile awn- 
less staminate or neuter spikelets and a‘ single fertile awned spikelet with a 
pair of sterile pedicellate ones, the rachis disjointing above the pairs of sessile 
staminate spikelets and forming a pointed callus below the fertile one. 
Sessile spikelets villous; glumes not strongly papillose_.._.______ 1. T. arguens. 
Sessile spikelets not villous; glumes strongly papillose, the papille bearing long 
stiff hairs_ ---- -2. T. quadrivalvis. 
1. Themeda arguens (L.) Hack. in DC, Monogr. Phan. 6: 657. 1889. 
CHRISTMAS GRASS. 
Stipa arguens L. Sp. Pl. ed. 2. 117. 1762. 
An ascending annual with compressed branching culms, flat scabrous blades, 
and V-shaped clusters of long-awned spikelets. 
Introduced in Jamaica (Morant Bay and Troy); native of Asia. Originally 
described from India. 
2. Themeda quadrivalvis (L.) Kuntze, Rev. Gen. Pl. 2: 794. 1891. 
KANGAROO GRASS. 
Andropogon quadrivalvis L. Syst. Veg. ed. 18. 758. 1774. 
Anthistiria ciliata L. f. Suppl. 118. 1781. 
Themeda ciliata Hack. in DC. Monogr. Phan. 6: 664, 1889. 
Usually taller than the preceding with an elongate inflorescence of more 
numerous and smaller clusters of spikelets. Exceedingly variable in the size 
of the subtending spathes. 
Introduced in Martinique and Barbados; native of the East Indies. Origi- 
nally described from India. 
20. ANTHEPHORA Schreb. 
Spikelets in clusters of 4, the indurate first glumes united at base, forming 
a pitcher-shaped pseudo-involucre, the clusters subsessile and erect on a slender 
flexuous continuous axis. 
+The name Rhapis L. f.; Ait. Hort. Kew. 8: 473. 1789, having a different deri- 
vation and pronunciation should not invalidate Rhaphis Lour. The latter name 
should replace Chrysopogon Trin. Fund. Agrost. 187. 1820. 
