III“
Il
. I-'
I d
This appears to be allied to F. Schiedianus, Sclilect. in Linn. 6. p. 391, a Mexican plant, but the petal»
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.
T a b . LXXXVII. Fig. 1. 2. Flowers ; Jig. 2. Stamen ; fig . 3. Pistil '.—magnified.
O r d . X X X V . A S C L E P IA D EÆ . U . 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 tbat of A . incarnata ; 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 ; to ta a rachnoideo-tomentosa, foliis oppositis oblongo-lanceolatis inferiori-
bus acutis superioribus longe acuminatis, umbellis in axillis superioribus breviuscule
pedunculatis, corolla calyce pedunculisque albo-lanatis, columna perbrevi, coronæ foliolis
erectis late ovatis obtusissimis su p ra medium biauriculatis co rn u subulatum incurvum
longe ad n a tum superantibus.
O r d . X X X V I . G E N T IA N E Æ . Juss.
1. Gen tian a detonsa. Fries.— Griseb. in Hook. Fl. Bor. Am. 2. p . 64. Id . Gentian, p .
256 (cum synon.).
1. E ry th ræ a tricantha {Griseb.) ; caule adscendenti ramosissimo fastigiato, foliis
oblongo-lanceolatis acutiusculis, cymis aggregatis semel-ter-dichotomis, floribus foliis
floralibus suffultis, alari subsessili corollæ tubo sub-antliesi calycem fere duplo superante,
posthac subæquante, lobis linearibus acuminatissimis. Griseb. Gen. et Sp. Gent. p . 146.
2. E . Muhlenhergii (Griseb.) ; caule inferne simplici, foliis ovato-oblongis obtusiusculis,
cymis laxis semel-ter-dichotomis, floribus lateralibus a foliis summis remotiusculis,
alari pedicellato, corollæ 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 .
Ccntaurium.
O r d . X X X V I I . C O N V O L V U L A C EÆ . Juss.
1. Calystegia B r .— Convolvulus. L .
2. C. subacaulis; a n n u a 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.