160 DACTYLOCTENIUM. — ELEUSI:N'E. 



22. DACTYLOCTENIUM— Wild. Egyptian 



Geass. 



ge:n^epjc chakacter. 



Spikelets several-flowered, with the uppermost flow- 

 er imperfect, crowded on one side of a flatened rha- 

 chis, forming dense pectinate spikes, 2 to 5 in num- 

 ber, digitate at the summit of the culm. Glumes 

 compressed laterally and keeled, membranaceous, 

 the upper (exterior) one awn -pointed. Lower palet 

 strongly keeled and boat-shaped, pointed. Stamens 

 3. Pericarp a thin utricle, containing a loose globu- 

 lar and rough-wrinkled seed. Koot annual. Culms 

 diffuse, often creeping at the base. 



Name compounded oidaMylos^ finger, 2iTi^'ktenion^ 

 a little comb, alluding to the digitate and pectinate 

 spikes. 



1. D.Egyptiacum (Egyptian Grass). A troublesome 

 weed. 



23 ELEUSmE — Gffirtn. Crab Grass, Yard 



Grass. 



geis"eric character. 



Spikelets 2 to 6 flowered, with a terminal naked 

 rudiment, closely imbricate-spiked on one side of a 

 flattish rhachis ; the spikes digitate. Glumes mem- 

 branaceous, pointless, shorter than the flowers. Pa- 

 lets awnless and pointless ; the lower ovate, keeled, 

 larger than the upper. Stamens 3. Pericarp (utricle) 



