202 UNITED STATES AND MEXICAN BOUNDARY. 
filaments of which are scarcely united at the base. Fertile flowers not seen. Fruit solitary 
and resembling that of 5. salicifolium, except in being larger. The plant seems to be dioecious. 
The genera Sapium and Stillingia are, we think, very properly united by Klotsch. Long 
ago Ad. Jussieu remarked (Huphorb. p. 50) that they were scarcely distinct and ought perhaps to 
form one genus. The calyx of the staminate flowers is the same in both, although it is described 
as tubular in the latter. The number of staminate flowers under a single bract or involucre is 
not а sufficient distinction. There are several in S. sylvaticum and 8. salicifolium ; but in S. 
annuum and 5. ligustrinum they are solitary. 
SIMMONDSIA CALIFORNICA, Nutt. in Hook. Lond. Jour. Bot. З, р. 400,4.16; (Тав, ХИХ.) Dry 
hills along the Gila and westward to San Diego; not uncommon in various parts of southern 
California, Nuttall did not see the fruit. This is about three-fourths of an inch long, ovate 
and obtusely triangular, abruptly pointed, and somewhat resembles the gland of an acorn. At 
maturity it splits into 3 valves; the dehiscence being loculicidal. It usually contains but a 
single seed, which is conformed to the cavity of the pericarp. The embryo is wholly destitute 
of albumen. The cotyledons are very thick and fleshy, and they cohere together, so that they 
only separate after considerable boiling. The radicle is minute and superior. The nuts have 
somewhat the flavor of filberts, but the after-taste is rather nauseous, and they are apt to cause 
purging. Mr. Nuttall thinks this genus is very clearly allied to Garrya, but it differs in several 
important characters. Lindley places it, without a remark, in Euphorbiaceae, ard we are inclined 
to follow him, notwithstanding the absence of albumen. 
Suborder BATIDE XA. 
Batis MARITIMA, Linn.; Torr. in Smithson. Contrib. 6, p. t. 11. On the beach, at Brazos 
Santiago; Schott. 
Batis CALIFORNICA, Torr. 1. c. Salt marshes near San Diego, California; Parry. We have 
received no more specimens of this plant since it was first described, and are by no means certain 
that it is specifically distinct from B. maritima. 
ОБТЇСАСЕЖ, 
URTICA URENS, Linn. Spec. 2, p. 284; Miguel in Mart. Fl. Bras. fasc. 12, р. 195, t. 67. In the 
sireets of Monterey, California, where it has manifestly been introduced, May ; Parry. Wet 
ravines near the Organ mountains, New Mexico ; Bigelow. 
URTICA PURPURASCENS, Nutt. in Trans. Amer. Phil. Soc. (n. ser.) 5, р. 169; Gray, Man. ed. 2, 
p. 998. San Antonio, Texas; Thurber. Near Eagle Pass on the Rio Grande; Bigelow. It is 
commonly simple, but Dr. Bigelow's specimens are branching from the base. 
URTICA GRACILIS, Ait. Hort. Kew 3, р. 341; Gray, І. c. Banks of the Limpio, July ; Bigelow. 
California; Дер, A. Fitch. Stem 4-5 feet high. Leaves often ovate and sometimes slightly 
cordate, coarsely toothed. 
BoEHMERIA CYLINDRICA, Willd. Sp. 4, p. 340. Banks of streams and wet thickets, western 
Texas. 
PARIETARIA DEBILIS, Forst. 5. FLoRIDANA, Weddell, Monogr. Urtic. p. 316. P. Floridana, 
Nuit. беп. 2, p. 208; Ell. Sk. 1, p. 576. Rocky places along the upper Rio Grande and in 
Sonora, March—May. (No. 1861, Wright.) The leaves vary from nearly orbicular to ovate- 
