ADDITIONS AND CORUECTIUNS To Vol. I. 4(J3 



iK'arly half tlio lon-^th of the clavate tube : sti^^ma l.i-aiiiculatc, : follicles 2 or 3 inches 

 loiiK, in-eguhvdy moiiilifonu, 1 - 4-seedecl, at length breaking into 1-seeded joints: 

 seed 5 lines long. — Troc. Amor. Acad. xii. Gl, and 1. c. 



Mohave DesL-rt (Palmer, u. iZ[>) ; Noitlieni Arizona and Southern Utah, Mrs. A. P. Thompson, 

 Palmer, Parry. 



I'agf 475. 1. ASCLEPIAS. 



3. A. Mezicana, Cav. Substitute for A. fascicularis, Decaisne, which is 

 ideutilied with the Mexican species by Dr. tJray. — Icon. i. 42, t. 58 ; Gray, 1. c. 9G. 



7. A. erosa, Torr. (Substitute for A. leucophylla, Engelm.) Founded upon 

 a glabrate state, as Engeliuann's ui)on the canescent-woolly form. 



Var. obtusa, Gray, 1. c. A form with elliptical and very obtuse leaves and scanty 

 woolliness. — A. leucophnUa, Engelm., var. ohtusa, Gray, JJot. Calif, i. 020. 

 Bartk'tt's Canon, near Santa Barhara, Polhrock. 



8. A. Fremonti, Torr. Canescently tomentose, with short fine wool, or the 

 stem i)uberulent, a foot high or less : leaves oblong or ovate-oblong, suljcordate at 

 base, obtuse or acute, entire, distinctly petioled, 3 or 4 inches long : umbels 1 to 3, 

 on peduncles not longer than the woolly pedicels : corolla whitish, the oblong-ovate 

 lobes 3 lines long : hoods nearly erect, equalling the anthers, somewhat eveidy trun- 

 cate, the inner angles produced into a tooth ; horn broad, the subulate exserte'd apex 

 incurved. — Gray, Syn. Fl. ii. 93. 



On the Upper Sacianiento (Frononf, Kcu-brrry) ; near Chico {Mrs. J. Bidirrll, HuokerkGrny) ; 

 near Little Lake, Mendocino County, Iliillfm. 



■*-•*-+- Hood mainly solid, lateralli/ compreaaed with nnrroir dorsal keel and 

 broader ventral wing ; the latter bearlnrj two .seinl-obomite lamclUn enclosing a 

 broad crest which Is produced Into a short subulate exsertcd horn. 



9. A. nyctaginifolia, Gray. Koughish-puberulent, ascending, apparently a foot 

 high : leaves rhombic-ovate, 2 or 3 inches long, rather long-petioled : umbels lateral, 

 very shortly ])e(lunck'(l, 4 - 8-llowered ; pedicels equalling the jieduncle : corolla 

 greenish, the oblong lobes G lines long : column very short : hoods little shorter than 

 the petals, nearly twice longer than the anthers ; e.xserted horn a line long. — Proc. 

 Amer. Acad. xii. 70, and Syn. Fl. ii. 95. 



At Rock Spring, Providence Mountains, Palmer. 



Page 477. 2». SCHIZONOTUS, Cray. 



Hoods saccate, oval, cleft on the back from apex to base, the ventral side adnate 

 the whole length to the column. Anthers, etc., of Acerates. Leaves opposite. — 

 Gray, Proc. Amer. Acad. xii. GG, and Syn. Fl. ii. 8G, 100. 



A sinf,'le species, separated from Gomphocarpns and from Acerates by the strictly dorsal lissure 

 of the hood. 



1. S. purpurascens, Gray, 1. c. — Gomphocarpm pur-purascens, Gray, Proc. 

 Amer. Acad. x. 76, and Eot. Calif, i. 477. 



3. PHILIBERTIA, HBK. 

 Calyx minutely 5-glandular within. Corolla open-campanulate or (in our species) 

 rotate and deeply 5-cleft or -parted ; lobes commonly ciliate, narrowly overlapping. 

 Crown double, the outer a membranous ring adnate to the base of the corolla, the 

 inner of 5 fleshy or hood-like scales adnate to the base of the stamineal column. 

 Stigma flat or und)onate or with a short 2-cIeft beak. Follicles rather thick, smooth, 

 acuminate. — Perennial herbaceous or shrubby twining plants, with opposite petio- 



