440 MEXICO.— SUPPLEMENT. [Polemoniacew. 



tomentosis, spicis paniculatis longissimis revolutis, pedunculis calycibusque dense tomen- 

 toso-hirsutis. — Don, Gen. Syst. Bot. and Gard. v. 4. p. 251. 



Wigandia scorpioides seems to have been only described by Choisy from an unpublished drawing of Sesse 

 and Mocino, but there can be no question of this being the same plant. Our specimens are 2 feet long, and 

 yet do not exhibit the lower leaves. The stem is thicker than a goose quill, obtusely angular, downy, not in 

 the least hairy. Leaves on our specimens alternate, 3-5 inches long, nearly elliptical, on a rather short 

 petiole, acute, irregularly toothed, of a thickish texture, above minutely reticulated with veins, wrinkled and 

 slightly downy, beneath thickly clothed with white tomentum. The upper branches form a large panicle of 

 secund large spikes, 4-6 inches long, revolute at their apices. Calyx large, cut to the middle in 5 rather 

 long, subulate (in the dry state curved) segments, covered with dense hairy tomentum. Corolla half an inch 

 or more across ; in its structure, and that of the stamens and pistil, exhibiting the same appearances as W. 

 urens. Branches of the styles, after the falling away of the corolla, much protruded beyond the segments of 

 the calyx . 



We may here observe that Choisy has described the Mexican Wigandia urens of Kunth and us (supra, p. 

 303), as a distinct species, with the following name and character : 



W. Kunthii; hispidissima, foliis ovato-cordatis duplicato-crenatis utrinque pilosis obtusis, paniculis ter- 

 minalibus ramosis, sepalis lineari-lanceolatis acutiusculis canescenti-tomentosis, capsulis pilis longis vestitis. 

 Choisy, in Mem. Phys. Gen. 6. p. 116. 



The original Wigandia urens is a native of Peru, whence we possess fine specimens from Mr Cuming, 

 Mr Mathews, and Mr M'Lean. 



Ord. XXXIV. CONVOLVULACE^E. Juss. 



1. Quamoclit vulgaris. Choisy. — Ipomasa Quamoclit. L. — Bot. Mag. p. 244. 

 Hab. Between San Bias and Tepic. 



1. Convolvulus (Pharbitis, Chois.) Nil. — Convolvulus Nil. L. — Ipomsea caerulea. 

 Ker, Bot. Reg. t. 276. 



Hab. Realejo. — This plant varies much in the foliage, the leaves being sometimes entire, sometimes 5-, and 

 in our specimens, more generally 3-lobed. 



There are several other Convolvulaceee in this collection, but they are too difficult to be determined with 

 our present materials, nor have we space for the descriptions. 



Ord. XXXV. POLEMONIACE^. Juss. 



1. Hoitzia ccerulea. Cav. Ic. 4. p. 44. t 366. Cantua caerulea. Lam. 



Had. Mexico. Bates et Grisebacli, in Herb, nostr. — This species is well distinguished by the narrow, 

 harsh, rigid, nearly solitary flowers at the apices of the short branches, the obovate, diaphanous, white brac- 

 teas, with deep purple, reticulated veins. I am not aware that this is found on the Pacific side of S. America. 

 Our specimens from Mr Bates and Dr Grisebach are we believe from near the city of Mexico. 



