342 
IPOMGA J. alapa. ae 
Jalap Ipomea. 
meee 
PENTANDRIA MONOGYNIA. 
Nat. ord. Convotvunt. Jussidu gen.132. Div. J. Stylus unicus. 
ConvotvuLAcez. Brown prod. 481. Sect. J. Germen 
unicum. 
J. Jalapa; pubescens; foliis cordatis integris lobatisque plicato rugosis sub- 
tis subtomentosis, pedunculis 1-3-floris, foliolis calycis ovalibus muticis; 
corollis campanulatis, seminibus prolixé lanuginosis, radice crassissimo, 
Pursh amer. sept. 1. 146. . 
Ipomoea macrorhiza. Michaux bor.-amer. 1. 141. 
Convolvulus Jalapa. Lin. Mant. 42. Hort. Kew. 1. 211. ed. 2, 1. 331. 
Willd. sp. pl. 1. 860. Desfont. in annales du muséum dhist. nat. 2. 126. 
tabb. 40. 41. 
(«) corolle limbo albo. Alujus loci.’ : 
(8) corollz limbo roseo, - Curtis's magaz. tab. 1572: 
Radix tuberosa, magna, perennis. Caules herbacee, orgyales, volubiies, 
ramosi, striati. Folia pubescentia, cordata, subtis tomentosa, integra vel 
2-7-lobata, nervosa: petiolus viz duplo brevior lamina. Pedunculi azillares, 
solitarii, pubescentes, breviores folio, subtriflori ; pedicelli glandulis 2 oppo- 
sitis bracteolisque 2 ovalibus caducis basi muniti. Cal. pallido-virens, villosus, 
oblongo-ovalis, + uncie circitér longus, segmentis ovalibus, obtusis, subcequa- 
libus, arctits conniventibus. Cor. extiis pubescens, hypocrateriformis; tubus 
subbiuncialis, cylindricus, superné parim ampliatus, duplo feré profundior 
limbo (in presenti specimine) corrugato. Stamina et Stylus inclusa: stig. 
subbilobo-capitatum, depressum: - filam. purpureo-villosa.. Semina sericeo- 
pubescentia. 
It seems to be admitted that the plant with a rose- 
coloured corolla from Mexico, and the present, with the 
limb of the corolla quite white, from South Carolina and 
Georgia, are merely varieties of the same species; that 
which affords the true Jalap. 
We are obliged to Mr. Herbert for the specimen we 
have figured, as well as for an admirable drawing, made by 
himself, of the flower. ‘The plant was raised in the hothouse 
at Spofforth, from seeds received from South Carolina about 
four years ago; but never flowered in perfection till Sep- 
tember of the present year. 
The leaves in the present plant varied much, but were 
nearly all divided into a greater or less number of lobes, 
there being only here and there a few entire ones. Its 
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