TO BOTANICAL GAZETTE [ JANUARY 
differs chiefly by interpetiolar appendages, lanceolate and denticulate leaves, 
smaller heads, less exserted disk-flowers with tube exceeding the limb and 
the palets of pappus. 
Between San Martin and Todos Santos, Depart. Huehuetenango, Guat., 
alt. 7,000-8,500 ft., Dec. 1895, E. W. Nelson, no. 3624. 
Buddleia megalocephala Donnell Smith.—Lana flavescente 
induta. Folia longe petiolata integra supra nitida elongato- 
lanceolata ad basin angustam obtusa. Capitula magna sphae- 
rica longe pedunculata in racemum terminalem disposita, bracteis 
subulatis, floribus conglomeratis, corollae majusculae campanu- 
lato-rotatae lobis orbicularibus cum tubo aequilongis. 
Indument stellate. Leaves 7-8 % X 13-2 in.; nerves 18-20 to the side, 
spreading at nearly a right angle, arcuate; ersiaies stout, I-14 in. long. 
Raceme 6-7 in. long ; peduncles stout, in 5-6 pairs, the lowest 1% in. long ; 
bracts and bracteoles 3-41. long, caducous. Heads 7-9 1. in diameter, 
tomentose. Calyx turbinate, 21. high, equaling linear membranaceous bract- 
lets, %-lobate, lobes triangular. Corolla 3 |. high, lobes externally tomentu- 
lose. Stamens included, oblong anthers affixed below sinuses. Ovary 
tomentose, style clavate.—Allied to B. g/obosa Lam. 
Mountains near Hacienda de Chancol, Depart. Huehuetenango, Guat., 
alt. 11,000 me Jan. 1896, E. W. Nelson, no. 3640. 
Tournefortia Nelsoni Donnell Smith. (§ Pirronia DC.)— 
Sordide » pubescens Folia peer petiolis ter quaterve longiora 
supra st subtus velutino-p ti oblongo-ovata longe 
SELES ie basin rotunda vel in ima cuneata. Cymae folia 
aequantis pedunculi axesque pluries dichotomi, spicae plures 
elongatae. Calycis segmenta lineari-lanceolata inaequilonga. 
Corollae tubus calycem subduplo lobos ovatos triplo excedens. | 
Petioles 2%-3% in. long. Leaves 10-12 X 4-4% in.; nerves 10-12 to 
the side, spreading, anastomosing arcuately at margins. Peduncles 4-6 times — 
furcate. Tube of corolla 3-34 |. long. Stamens affixed at throat, anthers ses- 
_ sessile and cence tami Disk minute. Stigma annular.—Nearest to 7:cymosa L. 
we Martin and Todos Santos, Depart. Huehuetenango, Guat., 
alt. 7000-8500 ft., Dec. 1895, E. W. Nelson, no. 3615. 
Ipomoea leucotricha Donnell Smith. (§ PiosicaLycrs Peter in 
Engl Natuerlich. Pflanzenfam. ile Pet ec t ses paginam 
superiorem foliorum et corollam explanat genteo-sericea. 
Folia discoloria supra sparsim pilosa ort iculari- 
