J. N. Rose: Dasylirion genus atque affinia novis speciebus mexicanis. 113 
XXXV. J. N. Rose, Dasylirion genus atque affinia novis 
speciebus mexicanis et centrali-americanis aucta. 
(Ex: J. N. Rose, Contributions of Mexican and Central American plants, No. 5, 
in Contr. Unit. St, Nat. Herb, X., pt. 3 [1906], pp. 87—92, pl. XXIII—XXV, 
et fig. 1—6.) 
1. Beaucarnea guatemalensis Rose, l. c., p. 88. 
Tree, 6 to 12 meters high with a thickened bulbous base abruptly 
contracted into a slender stem 5 to 8 cm in diameter; swollen base 
covered with a thick corky bark 6 em thick; upper part of stem smooth 
and with very thin bark; leaves numerous, clustered at the top as in 
the common cultivated Beaucarneas, erect CL broad at base (4 to 5 cm 
broad), 10 to 15 mm broad immediately above the base, 25 mm broad 
20 em from base, gradually tapering upward into a long filiform tip 
60 to 80 cm long, the margin entire; male inflorescence an open panicle, 
75 to 110 em long; female inflorescence not seen; fruit 15 mm long, 
strongly 3-winged; wings thin, 4 to 5 mm broad. 
Type specimen U. S. National Herbarium no. 474781, collected by 
W. A. Kellerman in a rocky ravine on the south side of the Sierra 
de las Minas, opposite El Rancho, Guatemala, altitude about 600 meters, 
on Mareh 10, 1905 (no. 4320). 
This species belongs with B. inermis and B. pliabilis, but the fruit 
is broader-winged than in the former and the leaves are broader than in 
the latter. | 
2. Beaucarnea inermis (S. Wats.) Rose, l. c., p. 88. 
Syn.: Dasylirion inermis S. Wats. Proc. Am. Acad., XXVI, 157, 1891. 
Mexico: San Luis Potosi (Pringle, Palmer). 
3. Beaucarnea oedipus Rose, l. c., p. 88. 
Trees 6 to 12 meters or more high; the base variously and enorm- 
ously enlarged, at first a globular body crowned by a clump of leaves 
but in very old plants more or less dome-shaped and 1 to 2 meters high 
by 2 to 7 meters in circumference; the trunk above the base compara- 
tively slender, often much branched, each branch crowned by a cluster 
of slender leaves; leaves erect, linear, 25 to 40 cm long, 4 to 6 mm 
broad above the base; inflorescence paniculate; fruit 3-winged. 
Type U. S. National. Herbarium no. 453660, collected by J. N. Rose 
and Jos. H. Painter on hills near Tehuacán, Puebla, August and 
September, 1905 (no. 10157). Also collected from the same station by 
Dr. Wm. Trelease, August, 1903, and by Dr. C. R. Purpus, 1905. 
4. Beaucarnea pliabilis (Baker) Rose, |. c., p. 89. 
Syn.: Dasylirion pliabile Baker, Journ. Linn. Soc., XVIII, 240, 1881. 
Mexico: Yucatan (Schott, Goldman, no. 607). 
5. Beaucarnea purpusi Rose, l. c., p. 89. 
Tree 6 to 8 meters high, somewhat swollen at base, a little branched, 
the trunk almost completely clothed by the reflexed and closely appressed 
Repertorium novarum specierum. 8 
