OP ARTS AND SCIENCES. 247 



leaves flat, shorter than the stem, about a line wide, the cauline small 

 and subfilit'orm : bracts subtending the branches of the panicle very 

 small : fruit obcordate in outline, 3 lines long, on a pedicel 4 lines 

 long. — Fl. 1. 208; Baker, Journ. Linn. Soc. 13. 292. Phalangium 

 virgatum, Poir. in Lam. Diet. 5. 246. S. Carolina to Florida 

 (Tampa Bay and St. Augustine). Specimens from the last locality 

 have thicker fruit, only 2 lines long, on very short pedicels. 



2. N. Lindheimeriana. Stem stout, 2 to 6 feet high, from a very 

 short caudex : leaves flat and thin, 2 to 4 lines broad below, 1 to 3 

 feet long, strongly serrulate ; the cauline 6 inches long : panicle simple 

 or sometimes compound, the bracts not conspicuous : fruit very thin, 

 emarginate at both ends (more deeply above), wider than long (5 lines 

 broad), on pedicels about 4 lines long. — Dasylirion Lindheimerianum, 

 Scheele, Linnasa, 25. 262. D. tenuifolium, Torr. Bot. Mex. Bound. 

 215. Beaucarnea Lindheimeriana, Baker, Trim. Journ. Bot. 10. 328. 

 Texas. 



3. N. microcarpa. Stem stout, 6 feet high, from a short caudex : 

 leaves concavo-convex, rather thick and somewhat carinate, 4 to 6 

 lines broad, very strongly serrulate, fibro-lacerate at the apex : panicle 

 narrow, branched at base ; branches slender, a foot long, with ascend- 

 ing branchlets (2 or 3 inches long) ; bracts small : fruit as in the last 

 but smaller (3 lines broad), on very slender pedicels 2 or 3 lines long: 

 stigmas very short, sessile. — Dasylirion erumpens, Rothr. in Wheeler's 

 Rep. 6. 272. S. Arizona (Rock Canon; Rothrock, n. 278). Re- 

 sembling N. erumpens: only immature fruit known. 



4. N. Bigelovii. " Scape 3 feet high " : leaves flat, nearly an 

 inch wide above the broad deltoid base, not carinate, 3 or 4 feet long, 

 the margin roughish : panicle compound ; branchlets slender, an inch 

 or two long : fruit very thin, 4 or 5 lines in diameter, emarginate 

 at both ends, on very slender pedicels 2 to 4 lines long : seed ovate- 

 oblong, 2 lines long, whitish, slightly reticulated. — Dasylirion Bige- 

 lovii, Torr. Pacif. R. Rep. 4. 151. Beaucarnea Bigelovii, Baker, 1. c. 

 326. W. Arizona. The plant found by Schott in Sonora, referred 

 to this species in Bot. Mex. Bound. 216, is probably distinct, but has 

 not been seen for comparison. 



5. N. Parryi. Resembling the last : caudex 3 to 6 feet high : 

 leaves thicker and somewhat concave above, especially toward the 

 stout apex, very strongly serrulate on the margin : branchlets of the 

 panicle and the pedicels stouter : fruit 6 lines in diameter : seed sub- 

 globose, the very thin testa finely and irregularly wrinkled. — Cali- 

 fornia (western border of San Bernardino Desert; Parry, 1876). 



