520 *m. a. bentham on classification and terminology. 



Plate IX. 

 Diagrams illustrating the Iloraology of Parts in the Graminerc. 



Fig. 1. Leersia, two glumes nearly similar, or one larger with more nerves than 



the other and no palea, the inflorescence very nearly that of Kyllinga 

 (compare Plate VIII. fig. 1). 



Fig. 2. Anthoxanthurn, six glumes, all dissimilar, but almost forming three 



pairs: (1) hyaline with a strong keel, the sides nerveless ; (2) twice as 

 large, rather firmer, with a strong keel and a prominent nerve on each 

 side; (3) much smaller, ciliate on the margins with the keel produced 

 into an awn free from above the middle ; (4) like no. 3, but rather 

 larger, the awn longer and free from much below the middle of the 

 glume : (5) rather shorter, very broad, hyaline, obtuse, no awn, no 

 cilia, and no keel, but one, sometimes three, very fine nerves ; (6) like 

 no. 5, but smaller and narrower with one verv fine nerve. 



Fig. 3. Panicwn, four glumes: (1) small, empty, sometimes minute, 1- or 2- 



nerved ; (2) much larger, empty, usually 3- or 5-nerved ; (3) some- 

 times exactly like no. 2, sometimes much larger, empty, or with a 

 p ilea only, or with a male flower in its axil ; of these three, sometimes 

 no. 2, sometimes no. 3 bears a long or short awn ; (4) flowering 

 glume, broad, smooth, of a firmer texture, nerveless, or with three fine 

 nerves enclosing the palea and the flower. 



Fig. 4. Vniola, glumes numerous ; nos. 1 to 4, or sometimes 1 to 6 empty, and often 



but not always smaller ; all the others having a palea and flower in 

 their axils. x 



Fig. 5. Agrcrpyron, glumes numerous, all similar, no. 1 and 2 empty, the others 



having a palea and flower in their axils. 



Fig. 6. Lolium, spikelets alternating along the rhachis of the spike, each with 



several glumes, the external glume in each of the lateral spikes empty, 

 the others having a palea and flower in their axils, but in the termi- 

 nal spikelets no. 1 and no. 2 both empty, no. 1 strictly corresponding 

 in position to the external one iu the lower spikelets ; but no. 2, which 

 encloses a flower in the lateral spikelets, is empty in the terminal one. 



