248 PROCEEDINGS OF THE AMERICAN ACADEMY 
* * Seed bursting the cell before maturity and remaining exposed... 
6. N. Texana. Stems very short, a foot or two high including 
the panicle, several from a very short caudex: leaves covering the 
ground, a line or two broad, concavo-convex below, triangular toward 
the apex, 2 to 4 feet long, roughish on the margins: panicle com- 
pound, the main bracts large and foliaceous with dilated bases : capsules 
2-3 lines broad before rupture, on pedicels 2 or 3 lines long: seed 
globose, nearly smooth, 2 lines in diameter.— Texas (Austin to the 
Nueces; n. 550, 712, Lindheimer; n. 692, Wright; n. 635, Hall). 
Flowering in March; in fruit in May. Referred to the Mexican Beau- 
carnea Haritwegiana by Baker, |. c. 
7. N. eRUMPENS. Stem 2 to 5 feet high, somewhat rough- 
scabrous: leaves thick, concavo-convex and somewhat carinate, half 
an inch broad above the base, 2 or 3 feet long, very strongly serrulate : 
panicle compound, with large dilated bracts ; partial panicles pyramidal, 
6 inches long, with the lower subdivaricate branchlets 2 or 3 inches 
long: stigmas linear, distinct, sessile: pedicels 2 lines long or less. — 
Dasylirion erumpens, Torr. Bot. Mex. Bound. 216.  Beaucarnea, 
Baker, l. c. 326. Western Texas (between the Rio Pecos and the 
Rio Grande). 
8. N. Patmert. Stem glabrous: leaves probably flat and broad, 
very strongly serrulate: panicle compound, 3 feet long and narrow, 
the partial panicles only 3 inches long or less, and the branchlets an 
inch long; bracts similar: stigmas upon a short style: fruit 2 lines 
broad before rupture, on pedicels 2 lines long: seeds globose, with 
minutely wrinkled testa.— Lower California (‘Tantillas Mountains ; 
Palmer, 1875). 
9. N. uumiLis. Stems stout, very short (a foot high or less, including 
the panicle), clustered, from a subterranean rootstock: leaves 2 feet 
long, 2 to 4 lines broad at base, becoming very narrow, more or less 
chamnelled above and usually carinate beneath, triangular toward the 
apex, very rough on the margin: panicle 4 to 6 inches long, with 
simple suberect branches, dense: flowers large, the segments 1} lines 
long: capsule equalling the pedicel, 3 lines long before rupture, thin- 
membranous: seed obovate, 3 lines long, with a white smooth thick 
and subcrustaceous. testa. — Among rocks, San Luis Mountains, 
Mexico; Parry & Palmer (n. 874, 875). 
The remaining Mexican species of Leaucarnea, described by Mr. 
Baker, 1. c., are doubtless all to be referred to this genus, but are very 
imperfectly known. 
