66 ME. G. BENTHAM ON GEAMINE^a). 



include £'. Nareya [Mriochrysis Wareya, Nees) &nA B.longifolia, 

 Munro {Uriochrysis longifolia, Munro), from East India, S. pallida 

 {Uriochrysis pallida, Munro) from South Africa, and 8. cayennense, 

 the typical Uriochrysis of BeauYois, which last differs only iu the 

 very dense almost spike-like panicle. 



4. Ebianthus, Mich. (Bipidium, Trin.), would be a more satis- 

 factory genus if it could be restricted to the two old species 

 U. saccharoides, Mich., from North America, and E. Bavenne, 

 Beauv., from the Old World ; but besides the above-mentioned 

 connexion with Saccharum, there are several South-American 

 species which run very closely into Pollinia. On the whole, it 

 seems best to consider Ilrianihus as an intermediate genus 

 between SaccTiarwn and Pollinia, having the inflorescence of the 

 former, but the flowering-glume more developed into a point or 

 awn almost as in Follinia. It would then consist of about twelve 

 species, amongst which JE. striata, Nees, from North America, has 

 no hairs on the rhachiila, but only a shorb pubescence on the 

 glumes. 



5. Spodiopogok, Trin., differs from Pollinia, as Ohrysopogon 

 does from Andropogon, chiefly in inflorescence. The short 

 branches of the panicle bear three spikelets, one sessile between 

 two pedicellate, and occasionally there is a pair of spikelets below 

 the three terminal ones ; but the branches never form the regular 

 spikes of Pollinia. Besides the original S. sihiricus, Trin., we 

 have two additional species, S. pogonantlius, Boiss., from the 

 Levant, and & albidiis {Andropogon albidus. Wall. Cat. Herb. Ind. 

 n. 8821), from East India. The generic name has also been often 

 misapplied. S. angmtifolius, Trin., is a Pollinia ; some others of 

 his species with 2-flowered spikelets belong to Ischmmum. Four- 

 nier's Mexican Spodiopogons are evidently species of Erianthus ; 

 his 8. foliata indeed (Bourgeau, n. 2979) appears to me to be 

 identical with the original E. saccharoides, Mich. 



6. Pollinia, Trin., is now a genus of about twenty-five tropical 

 or subtropical Old- World species, with the inflorescence of the sec- 

 tion Oymnandropogon of Andropogon, and the homogamous spike- 

 lets of Saccharum and Erianthus ; the spikelets are in pairs along 

 the simple branches of the panicle ; these branches either few, 

 almost digitate at the end of the peduncle, or more numerous and 

 scattered along the main rhachis. The genus is divisible into 

 two very naturarsections : — 1. Eulalia, with the spikes and pedicels 

 covered with long silky or rufous hairs as in Erianthus, includes 



