76 PANICACE^. 



narrowest, the third sometimes standing as the floral glume of a 

 terminal staminate flower; floral glume and palea membranous, the 

 former of the perfect flower terminating in a twisted awn. 



Tropical grasses, somewliat nearly related to Andropogoneie and 

 Panicece. 



This tribe was first proposed by Xees, and partly adopted and 

 extended by Munro and Bentham. 



They differ from Panicese and approach Andropogoneas in the 

 thin texture of the floral glume and palea, and by the frequent 

 presence of a slender, often bent awn on the floral glume. They 

 differ from Andropogoneae in their inflorescence; the spikelets 

 singly scattered, or clustered along the inarticulate branches of the 

 panicle. The tribal name comes from Tristegis Nees, a name given 

 to the genus 3Minis supposing the forms to be new. 



20. (51). Arundinella Eaddi, Agrost. Bras. 37, 1. 1. f. 3 (1823). 



Goldhachia Trin. Spreng. N. Entd. 2:81 (1821). 



Ckdamocliloe Reichb. Consp. 52 (1828). 



J'hysanachne Presl, Thysan. Nov. PL Gen. (1829). 



Brandtia Kunth, Eev. Gram. 2:511, t. 170 (1830). 



Riedelia Trin. Kunth, Enum. PL 1:515 (1833). 



Acratherum Link, Hort. Berol. 1:230 (1834). 



Spikelets acute or acuminate, with 1 terminal, perfect flower 

 and often a second staminate one below it, in a loose terminal pan- 

 icle. Glumes 4, the three outer ones often pointed, but not awned, 

 the second longer than the others, the tliird with a palea or male 

 flower in its axil; terminal floral glume smaller, thinner, hyaline, 

 with a fine awn twisted in the lower part and bent back at or below 

 the middle; palea smaller. Stamens 3. Styles distinct. Grain 

 oblong, included, but not adherent. 



Low or tall grasses with a terminal panicle. A tropical or sub- 

 tropical genus, containing 25 species, chiefly Asiatic, with a few 

 African and American species. 



1. A. Palmeri Vasey ined. 



Culms smooth, sparingly branching, about 90 cm. high. Ligule 

 ciliate, about 1 mm. long; blades of the culm rigid, erect, involute, 

 scabrous, 15-20 cm. long, 3-5 mm. wide. Panicles rather densely 



