98. GEAMINEiE. 415 



B. Spikelets sessile m hollows of the rachis. 



Ti.YLJVABDUM Spikelets 1-flowered. Gl.O. Style short. 

 Stigmas filiform. 



13. Nabdtts. Spikelets in 2 rows on one side of tlie racHs. 

 Lower pale keeled, tapering into a subulate point. Stig- 

 mas long. 



Suborder II. EURYANTHE^. 



Flowers open. Style sbort. Stigmas protruded near to the 

 bottom of the flower. 



A. Inflorescence panicled or racemose ; rachis without lateral 

 excavations. 



Tr. VII. ORYZE^. Spikelets laterally compressed, 1-flowered, 

 Glumes 0. Stigmas feathery. I'ales enclosing but free 

 from the nut. — Pales opening only slightly. 



14. Lbbrsia. Pales 2, like parchment, compressed, keeled, 

 awnless ; lower much broader. 



Tr. VIII. STIPACEM. Spikelets cylindric, 1-flowered, with- 

 out any rudiment. Gl. unequal membranous, enclosing 

 the flowers. Pales hardening, enclosing but free from the 

 nut. 



[15. Step A. Spikelets stalked. Pales coriaceous ; outer cy- 

 lindrical, convolute, eyidently jointed to the kneed twisted 

 feathery awn.] 



16. MiLiTJM. Spikelets stalked. Pales like parchment, awn- 

 less ; lower ventricose, convex. 



Tr. IX. AGROSTIBEM. Spikelets laterally compressed, 1- 

 flowered, or with a superior rudiment, or many-flowered. 

 Gl. and pales membranous. 



■j- Gl. falling short of the outer pale. Style long. Stigmas often 

 protruded near the middle of the flower. 



17. Phba&mitbs. Pan. diifuse. Gl. unequal ; lower much 

 smaller. Fl. 1 — 6, awnless, with silky hairs at their base ; 

 lower imperfect. Lower pale acuminate, much exceeding 

 the inner, awnless. 



ft Gl. exceeding the flowers. Style short or none. 



18. Psamma. Pan. spikelike. Gl. nearly equal; lower rather 

 the shorter. Fl. 1, with sUky hairs at its base, or without 

 a superior rudiment. Lower pale with a very short awn. 



