ROSE—MEXICAN AND CENTRAL AMERICAN PLANTS. 279 
thin (at least on flowering specimens), perfectly glabrous on both surfaces except 
for some tufts of hairs in the lower axils of the veins on the under surface; racemes 
slender, clustered at the ends of the second-year branches, 10 to 15 cm. long, glab- 
rous; pedicels slender, 1 to 2 cm. long, glabrous; immature fruit glabrous, 
Collected by J. N. Rose near Colomas, Sinaloa, July 16, 1897 (no. 3213). 
Type U. 8S. National Herbarium no, 302178. 
Terebinthus diversifolia Rose. 
Bursera diversifolia Rose, Contr. Nat. Herb. 5: 113. 1897, 
Terebinthus laxiflora (8. Wats.) Rose. 
Bursera laxiflora S. Wats. Proc. Am, Acad, 24: 44. 1889. 
This is a very distinct species. The material from Lower California referred to 
this species is quite distinct and will be taken up under a different specific name by 
Mr. T. 8. Brandegee. 
Terebinthus nelsonii Rose. 
Bursera nelsonii Rose, Contr. Nat. Herb. 3: 314. 1895, 
Terebinthus pilosa (Engler) Rose. 
Bursera graveolens pilosa Engler in DC. Monog. Phan. 4: 49. 1883. 
Terebinthus pubescens (Schlecht.) Rose. 
Elaphrium pubescens Schlecht. Linniwa 16: 527. 1842. 
Rachis of leaf winged; leaflets 7, 3 to 5 em. long, narrowly elliptical, acute and 
acuminate, cuneate at base, entire below, coarsely and irregularly toothed above, 
pubescent on both sides; inflorescence as long as the leaves; calyx teeth 4, very short, 
ciliate; petals 4, elliptical, obtuse, somewhat narrowed at base, glabrous. 
Type locality: ‘EF campeche.”’ 
Probably common in Yucatan. 
This species is not recognized by Dr. Engler or other writers on this genus. As 
suggested by Schlechtendal, it isnear Bursera grareolens, but it is apparently distinct. 
Before studying this species I had segregated from 7. graveolens material from Yuca- 
tan, which I now find answers very well to 7. pubescens. 
Terebinthus trijuga (Ramirez) Rose. 
Bursera trijuga Ramirez, Anal. Inst. Med. Nac. 2: 16, 1896. 
MALPIGHIACEAE. 
THRYALLIS. 
The genus Thryallis was published by Linnieus in the second edition 
of his Species Plantarum” basing it upon a single species 7. drasi/7- 
ensis. In 1829 Martius described two additional species 7. /ongifolia 
and 7. latifolia. 
These two species, however, were soon found not to be congeneric 
with the original species, but instead of being taken out as a new gen- 
eric type,’ were allowed to remain as Thryallis, while the true type of 
that genus was transferred to Galphimia®. The following species either 
are new or have been published under Galphimia, 
a Page 554. 
b Otto Kuntze in 1891 (Rev. Gen. Pl. 1: 88) gave the name Ilemsleyna to these 
species, 
¢ Cay. Ie. 5: 61. 1799. 
