278 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
SIMARUBACEAE. 
THE MEXICAN SPECIES OF CASTELA. 
The species of Castela are very characteristic desert undershrubs, 
and their distribution ought to be carefully worked out. The study 
of our very scanty material has shown one new species, which is here 
described. Also the variety of C. nichelsoné is here raised to specific 
rank, The four Mexican species, one of which is very doubtful, are 
the following : 
Castela lychnophoroides Liebm. Vidensk. Meddel. 1853: 110. 1854. 
This plant is an uncertain Castela. I have not yet been able to find it at the type 
locality. The description suggests that it may not belong to this genus. 
5 
Castela peninsularis Rose, sp. nov. 
Thorny shrub; pubescence on branches and thorns short, dense, velvety, yellowish ; 
leaves cblong, 1 to 2 em. long, entire or few-toothed, somewhat revolute, the 
pubescence on the under surface soft but not matted; flowers axillary, red; stamens 
pubescent. . 
Collected by C. A. Purpus at San José del Cabo, Lower California, March, 1901 
(no. 244). 
Distributed as C. tortuosa, but different in its leaves and pubescence. 
Castela texana (Torr. & Gr.) Rose, 
Castela nickelsoni terana Torr, & Gr, Fl. N. Am, 1: 680, 1840. 
Castela tevana has generally passed as the Castela nickelsoni of the West Indies, a 
very different species. Its relationship is more closely with C. tortuosa of South 
Mexico, from which it differs in its somewhat narrower leaves, these more strongly 
reticulated beneath and in its more yellowish pubescence. 
Castela tortuosa Liebm. Vidensk. Meddel. 1853: 110, 1854. 
This species has long been a desideratum in our larger herbaria. In 1905 it was 
collected by Rose and Painter from near the type locality, Tehuacin, Mexico. 
ADDITIONAL SPECIES OF TEREBINTHUS. 
In No. 5 of this series a list of 50 species of Terebinthus was given.4 
Since its preparation several new species have come to hand and these 
with several others which had been overlooked are here presented. 
Terebinthus acuminata Rose, sp. nov. 
Small shrub, 3 to 4 meters high, the trunk and older branches shedding the bark 
and becoming reddish-brown; leaves large, pinnate; rachis of leaf terete, pubescent; 
leaflets 5 to 7, broadly lanceolate, acuminate, 6 to 10 em, long, glabrous or nearly so 
above, somewhat pubescent beneath, especially on the veins; fruit in rather dense 
racemes, shortly oblong, labrous. 
Collected by J. N. Rose and Joseph H. Painter on a hill near Chapala, Jalisco, 
October 5, 1903. 
Type U.S. National Herbarium no. 451271. 
Terebinthus attenuata Rose, sp. nov. 
Tree; branches even when quite young perfectly glabrous; leaves large, pinnate; 
aContr. Nat. Herb. 10: 117-122. 1906. 
