184 MB. C. B. CLA.BKE OF INBIA.N SPECIES OF CTPEBUS. 



give the suggestion of a quasi-articulation ; but this is also so in 

 C. poli/stachyus and other altogether remote species.] 

 America borealis : Canada (Goldie,h. Calcutta); Pennsylvania 

 (Poeppig, h. Calcutta) ; Chicago {Babcock, h. Calcutta). 



142. C. cephaIiANthus (Torrey and Hook, in Ann. Lyceum 

 Neio York, iii. p. 131) ; foliis bracteisque longis ; umbella com- 

 posita, densa; umbellulis sgepe condensatis; spicis cylindricis, 

 densis ; spiculis undique rectangulatim patentibus ; rhachillae 

 alis magnis, rotundis, subsolubilibus. 



C. laatus, var. y, Boeck. in Linncea, xxxvi. p. 295. 



Radix fibrosa. Culmus 4 dm., triqueter. Umbella 12 cm. in 

 diam., densa. Spiculse longae 12 mm., latse 2 mm., laxe 14-florse. 



[This species, arranged by Boeckeler in the centre of the typical 

 Corymbosi, has been actually issued from Kew as C. glomeratus, 

 Linn. ; and it is so like C. glomeratus that, but for the extra- 

 ordinary wings of the rhachilla, it might possibly be united with 

 it. Boeckeler has, on account of these wings, removed the species 

 to the Corymbosi ; but there is nothing in the Corymbosi like 

 the wings, to match which we must go into Mariscus. This is 

 one (among many) species that leads me to think too much 

 systematic importance has been given these wings ; I doubt 

 whether, on the whole, C. cephalanthus is not really nearer C. glo- 

 meratus than it is to anything else ; the root, stem, habit, in- 

 florescence all point that way.] 



Texas (Drwmmond, h. Calcutta). 



Sect. O. Papyri. 



Papyri et Exaltati, Kunth, Enum. ii. pp. 64, 70; Boeck. in 

 Linncea, xxxvi. pp. 302, 317. 



Radix fibrosa. Culmus solitarius, robustus, foliatus. Umbella 

 magna, composita aut decomposita, spiculis spicatis, innumerosis. 

 Spiculse compressse, multi- vel pauciflorae ; rhachilla? alae 

 magnse, solubiles, aut minus conspicuse aut insolubiles. Glumse 

 parvae, ovato-rotundse, ssepius breviter mucronatae. Stamina 3 ; 

 antherse longe aut breviter cristatse vel muticse. Nux ellipsoidea 

 aut obovoidea, trigona aut triquetra, cum j-f parte glumae sequi- 

 longa. 



This is a very natural group, easily recognized by the innu- 

 merable spikelets and small glumes : in some of the species small 

 examples with a depauperated congested umbel occur, but such 



