Convolvulacem.'] 
CALIFORNIA.— SUPPLEMENT. 
This appears to be allied to F. Schiediams, Sclilect. in Linn. 6. p. 391, a Mexican plant, but the petals 
of that species have not yet been observed. In our plant, the anthers are remarkably large, rather longer 
than the petals, and the filaments are so very short as to be enclosed within the calyx. 
Tab. LXXXVII. Fig. 1. 2. Flowers ; Jig. 2. Stamen; ^g. 3. Pistil : — magnified. 
Ord. XXXV. ASCLEPIADE^. 22. Brown. 
1. Asclepias Mexicana. Cav. ? Ic. 1. p. 42. t. 58. 
Our plant agrees well with Cavanilles’ figure, but the flowers have a faint tinge of purple, and are by no 
means white. The structure of the inflorescence is precisely that of A. incarnala ; and Douglas found both 
growing together on the banks of the Walla-wallah. But in this the leaves are always narrow and in fours, 
while in A. incarnata they are opposite and much broader. 
2. A. vestita ; tota arachnoideo-tomentosa, folds oppositis oblongo-lanceolatis inferiori- 
bus acutis superioribus longe acuminatis, umbellis in axillis superioribus breviuscule 
pedunculatis, corolla calyce pedunculisque albo-lanatis, columna perbrevi, coronas foliolis 
erectis late ovatis obtusissimis supra medium biauriculatis cornu subulatum incurvum 
longe adnatum superantibus. 
Ord. XXXVI. GENTIANE^. Juss. 
1. Gentiana detonsa. Fries. — Griseb. in Hook. FI. Bor. Am. 2. p. 64. Id. Gentian, p. 
256 (cum synon.). 
1. Erythraea tricantha (Griseb.) ; caule adscendenti ramosissimo fastigiato, foliis 
oblongo-lanceolatis acutiusculis, cymis aggregatis semel-ter-dichotomis, florlbus foliis 
floralibus sulFultis, alari subsessili corollas tubo sub-anthesi calycem fere duplo superante, 
posthac subasquante, lobis linearibus acuminatissimis. Griseb. Gen. et Sp. Gent. p. 146. 
2. E. Muhlenbergii (Griseb.); caule inferne simplici, foliis ovato-oblongis obtusius- 
culis, cymis laxis semel-ter-dichotomis, floribus lateralibus a foliis summis remotiusculis, 
alari pedicellate, corollas tubo sub-anthesi calycem paullo excedente, lobis oblongo- 
lanceolatis acutiusculis. 
E. Centaurium, Beck, from Oswego, is perfectly distinct from this species, and appears to be the true E. 
Centaurium. 
Ord. XXXVII. CONVOLVULACEM. Juss. 
1 . Calystegia Soldanella. Br. — Convolvulus. L. 
2. C. subacaulis; annua humillima pubescenti-sericea, caule perbrevi, foliis longe 
petiolatis ovato-hastatis obtusis cum mucronulo, pedunculis unifloris axillaribus petiolo 
duplo brevioribus, sepalis late ovalibus mucronatis bracteas ovales superantibus, corolla 
campanulato-infundibuliformi. 
Flowers in the dry state pale sulphur-coloured, large, and, together with the peduncle, about the height of 
the foliage. 
