204 



ILLUSTRATIONS OF INDIAN BOTANY. 



Thus— "^, stems twining — ^, capsules and sepals moderate sized or small — m^ flowers not capi- 

 tate — p, leaves cordate — q^ leaves entire — r, flowers two or three — ii^ one- to three-flowered — 1\ 

 leaves cordate acuminated, stems glabrous or softly villous. I. obscura^ 



As it appears not improbable that there are some additional genera, as well as species, not 

 included in this Clavis, natives of the the Peninsula, I send along with it M, Choisy's own 

 Conspectus Generum, published in the Jn7iales des Sciences Nahirelles, for September 1834, 

 and leave you to determine on the propriety of reprinting it among your selections. 



I remain, &c. 



Robert Wight. 



EXPLANATION OF PLATES. 



PharLItIs A. C. D., ovar. 3-ceIIed, 



Ipomea A. C. D, R G. H., sepals verticillate. 



Batatas A. C.D.E., cor. carapanulate, stamens included. 



Quamoclit A. C. D. E., coroL infundibuliform, stamens 

 exserted. 



Rivea A. B., ovar. 4-celled. 



Aniseia A. C. D. F. G. H-, sepals inserted, some lower 

 down than others. 

 Ipomea obscura. — a. g. m. p. q. r. u. v.— L obscura. 



B 



C 



D 



CONVOLVULACE^. 



Clavis of the Genera. 



Embryo, without cotyledons 

 ■^^^— with cotyledons. A. 



* < Fruit, a dry berry. B. 

 J capsular. C. 



Ovarium, 4-celled, 

 2-celled, 



single, undivided. D. 

 ■single and bifid, or 2 styles. 



K 



Ovarium, 4-celled. E. 



3-celled, 



2-celIed. F. 



1-celled, I. 



jj ^ Corolla infundibuliform: stamens exserted, 



campanulata: stamens included, 



■ 



p J Stamens exserted, corolla infundibulifonn, 

 I included. G. 



Q < Lobes of stigma, globose, H. 

 ^ „ ffliform or terete, 



jT < Sepals, verticillate, - - - 



— -inserted, some lower down than others, 



I 5 Lobes of stigma, flattened, ovate, 





globose, sepals enlarged after flowering, 



If JSty^^s 1- tJfiJ' anthers included, 

 ^ I 2. L. 



T S Styles, undivided: stigmas globose, anthers exserted, 

 ( each bifid, 



- 15 CUSCUTA. 



1 Rivea. 



2 Argtkeia. 



5 Pharbitis. 



3 Quamoclit. 



4 Batatas. 



6 CAiONlCTIOIT. 



8 Convolvulus. 



7 Ipomea. 



9 Aniseia. 



*10 Hewittia (W. 



11 PORAWA. 



12 Breweria. 



&A.). 



13 Cressa. 



14 EvoLvuLUS. • 



a 



Clavis of the Species. 



1. Rivea. CL 



Corolla inflated, cylindrical . _ . ^ „ 



with limb spreading, a. 



Corolla hypocraterif, tube equal, narrow, peduncles 1-flowered. 



"^ Artt^^^^^^^^^ ""'^r ^^^.^^^' P!^^^^^^« 3-flowered or with 2 



1 R. tiliaefolia, ch. 



2 R. hypocraterif, ic«5, 



3 R. bona-nox. 



10 Shuteria CL (not W. & A.) 



