AGAVE. 167 



spine, the edge furnished with minute brown cartilaginous teeth 

 below the middle, above it splitting off into a few short stout white 

 threads. Peduncle with inflorescence 4-5 ft. long. Flowers not 

 more than ^ in. long ; ovary oblong, ^ in. long ; tube campanulate, 

 a little longer than the ovary. Filaments ^- in. long, inserted low 

 down in the tube, scarcely protruded beyond the tip of the segments. 

 Hab. Sierras of Southern Arizona, also discovered by Dr. Schott during 

 the expedition sent to explore the Mexican boundary in 1855. 



5. A. {Littcca) angustissima Engelm. Notes, 18. — Leaves narrow 

 linear, rigid, 2-3 ft. long, ^ in. broad, convex on the back, 

 filamentose on the edges, ending in a short pungent brown spine. 

 Peduncle with spike 5-6 ft. long. 



Hab. Western Mexico, near Ocotillo, gathered by Dr. Gregg. 



Group 2. — Marginat.^. 



6. A. Karatto Miller, Gard. Diet. No. 6, non Salmdyck. — Leaves 

 ensiform, dark green, 21-3 ft. long, 3 in. broad, the end spine black, 

 the border reddish brown and slightly serrated. Liflorescence 

 unknown. 



Hab. West Indies ; Island of St. Kitts. A plant lately received at Kew 

 from St. Kitts, from the Hon. J. H. H. Berkeley, is probably Miller's species in 

 a young state. It has bright green leaves, a little narrowed below the middle 

 and a very narrow red-brown edge, with very small hooked deltoid-cuspidate 

 teeth. 



7. A. [Littma] lophantha Schieie in Linnaea, iv. 582. — Acaule- 

 scent. Leaves 30-40 in a rosette, rigid, ensiform, 2-3 ft. long, 

 1^ in. broad at the middle, dull green in the typical form, \ in. 

 thick in the centre, rather concave down the face, rounded on the 

 back, ending in a pungent brown spine an inch long, margined by 

 a narrow grey continuous horny line, furnished with distant grey 

 falcate teeth about a line long. Peduncle with spike reaching a 

 length of 15-20 ft. Flowers dense, IJ in. long ; tube very short; 

 segments linear-oblong, pale green, tinged with brown, as long as 

 the ovary. Stamens twice as long as the perianth-segments. 



Hab. Mexico, introduced by Schiede about 1840. Now common in col- 

 lections, with many named varieties. Flowered at Kew in the autumn of 1887. 

 A. carulescens Salmdyck is a variety with very glaucous leaves, which runs into 

 the type through vars. subccuiescens and grisea. A. Fimkiana K. Koch & Bouche 

 appears to be a variety with vittate leaves. 



8. A. (Littcea) univittata Haw. in Phil. Mag. x. 414 ; Baker in 

 Saund. Ref. Bot. t. 215; Gard. Chron. 1877, fig. 58; Bot. Mag. 

 t. 6655. — Acaulescent. Leaves 50 or more in a rosette, ensiform, 

 very rigid in texture, 2-2i ft. long, 2-3 in. broad at the middle, 

 narrowed very slightly downwards and gradually to a pungent end- 

 spine an inch long, the face very slightly concave, dull dark green, 

 with a broad pale band down the middle, the edge furnished with a 

 continuous narrow brown margm, with distant small falcate 

 prickles. Peduncle 3-4 ft. long, with dense squarrose bract-leaves. 

 Spike dense, 7-8 ft. long, 4 in. diam. Ovary cylmdrical, glaucous- 

 green, an inch long ; tube very short ; segments yellowish, J in. 



