364 APPENDIX. 



AcANTiiOGONUM ? coRRUGATUM (n. sp.): caule superne trichotome rainoso ; bracteis brevibus 

 recurvis ; fiisciculis involucrorum pedunculatis ; involucri laciniis subfoliaceis subtequalibus 

 spinescentibus, ajjice incurvia, tubo cyliiulrico 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 bigb up in tbe tube. Plant only two or three inches 

 high. 



Chorizanthe fimbriata, Nutt. PI. Gamh. in Jour. Acad. Phil. (n. ser.) 1, p, 1G8 ; Bentti. 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. 



Eriogonum Thomasii (n. sp.): annuum foliis radicalibus rosulatis longe petiolatis ovatis supra 

 pubescentibus subtus albo-lanatis ; scapo trichotome ramosissimo glaberrimo, ramis capillaribus, 

 involucris 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 Fremont, 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. Flo-wers 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, Linii ? Caiiada de las Uvas, in saline soils ; California. The specimens 

 are not sufficient lor accurate determination ; but the plant appears to be identical with the 

 common frutescent species. 



Schoberia calceoliformis, Moq. in DC. 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 Rep. p. 18. Alluvial soils near the 

 Colorado ; September. 

 Euphorbia polycarpa, Benth. Bot. Sulph. p. 50. With the last. 



Euphorbia ^feriLOBA (Engelm. Mss.): " prostrata, pilis brevibus patulis ssepe glanduliferis 

 tota puberula ; foliis minutis e basi vix obliqua subcordata ovatis obtusis ; stipulis minutis 

 deciduis ; gloraerulis 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, \eTj conspicuous, 

 almost setaceous. There are only about three male flowers in each involucre. 



Oreodaphxe Californica, Nees, Syst. Lavr. 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 Spaniards 



