364 APPENDIX. 
ACANTHOGONUM? CORRUGATUM (n. sp.): caule superne trichotome ramoso ; bracteis brevibus 
recurvis ; fasciculis involucrorum pedunculatis; involucri laciniis subfoliaceis subaqualibus 
spinescentibus, apice incurvis, tubo cylindrico corrugato. Near Fort Yuma. This species 
seems to be almost intermediate between Acanthagonum and Chorizanthe. It has the habit of 
the former, with the cylindrical tube and incurvate tips of the involucre of the latter. But the 
involucral segments are never more than three, and the filaments are not inserted near the base 
of the perianth, as in Chorizanthe, but high up in the tube. Plant only two or three inches 
high. 
CHORIZANTHE FIMBRIATA, Nutt. Pl. Gamb. in Jour. Acad. Phil. (n. ser.) 1, p, 168; Benth. in 
DC. Prodr. 14, pars I, p. 25. California Desert, and on Pacific coast. (Tab. VIII.) "This 
belongs to a section of the genus Ptilosepala, by Nuttall. A second species discovered by Dr. 
Antisell, in Parke's expedition, near San Felipe, it will be described and figured in the botany 
of that expedition, under the name of C. laciniata. 
卫 RIOGONUM THOMASIT (n. sp.): annuum foliis radicalibus rosulatis longe petiolatis ovatis supra 
pubescentibus subtus albo-lanatis ; scapo trichotome ramosissimo glaberrimo, ramis capillaribus, 
involueris longe filiformi-pedunculatis late campanulatis 5-dentatis 8-10-floris, bracteolis cune- 
ato-oblongis obtusis, margine longe pilosis, perigoniis basi extus pubescentibus, laciniis exteri- 
oribus subpanduriformibus, interioribus lineari-oblongis. Near Fort Yuma. Also found by 
Colonel Frémont, probably on the lower part of the Gila, in 1849. Plant about a span high ; 
leaves 6-8 lines long ; the petioles varying from half an inch to an inch in length. Branches 
of the scape widely spreading. Peduncles 4-8 lines long. Involucres scarcely half a line long, 
deeply 5-toothed. Flowers nearly as large as the involucre, glandularly pubescent at the base, 
the pedicels articulated close to the perianth. Divisions of the perianth very obtuse; the 
exterior cordate at the base and reflected at the sides, a little emarginate; the inner about one 
third longer than the exterior ones. Filaments and ovary glabrous. Fruit not seen. Resem- 
bles E. trichopodum, but that species has the flowers strongly hairy on every part, acute and 
nearly equal segments of the perianth, and narrowly linear bracteoles. 
SALICORNIA FRUTICOSA, Linn? Cañada de las Uvas, in saline soils; California. The specimens 
are not sufficient for accurate determination ; but the plant appears to be identical with the 
common frutescent species. 
SCHOBERIA CALCEOLIFORMIS, Mog. in DO. Prodr. 13 ‚pars I, p. 166. With the last. Moquin 
states that this plant has been found near New York, which must be a mistake. 
EUPHORBIA ALBOMARGINATA, Torr. & Gray, Bot. Pope's Hep. p. 18. Alluvial soils near the 
Colorado; September. 
EUPHORBIA POLYCARPA, Benth. Bot. Sulph. p. 50. With the last. 
EUPHORBIA SETILOBA (Engelm. Mss.): ‘* prostrata, pilis brevibus athe ssepe glanduliferis 
tota puberula; foliis minutis e basi vix obliqua subcordata ovatis obtusis ; stipulis minutis 
deciduis ; glomerulis lateralibus ; involucris dorso profunde fissis, appendiculis in lacinias 3-4 
subulatas divisis; stylis elongatis fere ad basin bifidis, stigmatibus clavellatis divaricatis ; 
capsula hispidula ; seminibus ovatis acutatis transverse rugulosis.”? Near Fort Yuma. Stem 
3 inches long. Leaves 1 line long, reddish. Appendages of the glands white, very conspicuous, 
almost setaceous. There are only about three male flowers in each involucre. 
OREODAPHNE CALIFORNICA, Nees, Syst. Laur. p. 463. Martinez, California. In that region 
the plant is scarcely a tree, the height being only from 10 to 20 feet. The inhabitants know it 
by various names, such as mountain laurel, balm of heaven, spice bush, &c. The 
