1894.] D. Prain — Some additional species of Convolvulacese. 101 



A very distinct Moorcroftia perhaps nearest to L. ruhicunda, but well distin- 

 guislied by its small flowers from all the other species of the section. With this 

 the writer identifies Fortes n. 2530, from Sumatra (in fruit only), which has, 

 however, rather longer petioles and less sharply acuminate leaves than the Perak 

 plant, while the midrib near the base of the leaf is sparsely hirsute above. Perhaps 

 Forbes's plant should be considered varietally distinct ; it does not, however, appear 

 to the writer to deserve specific rank. 



5, IPOMOEA Linn. 



Sqb-genus I. Calontction. Key to the Indian Species. 

 * Sepals lanceolate (glabi'ous) ; seeds glabrous ; 



(leaves glabrous above and below; capsule 

 J in. diam.) : — 

 § Corolla white, tube linear, glabrous within ; 



stamens ex serted ; sepals cuspidate. ... I.hona-nox Y xn. grandiflora. 



§§ Corolla purplish, tube infundibuliform, 

 hairy within ; stamens included ; sepals 

 lanceolate not cuspidate ... I. muricata. 



** Sepals ovate ; seeds hairy ; (stamens included) : — 

 % Sepals glabrous ; leaves glabrotas above and 

 below ; (hairs on seeds short ; capsule 

 1 in. diam.) : — 

 § Corolla-tube linear ... ... I. gXdberrima. 



§§ Corolla-tube wide-infundihuliform ... I. longijiora. 



^^ Sepals hirsute ; leaves beneath and petioles 

 hirsute ; corolla-tube linear : — 

 § Branches pilose, leaves deep-coi'date. Corolla 

 long ; hairs on seeds short ; capsule J in. 

 diam. ... ... ... J. yomce. 



§§ Branches glabrous, leaves shallow-cordate. 

 Corolla rather short ; hairs on seeds very 

 iow^;; capsule 1 in. diam. ... ... I. jucunda. 



1. Ipomoea bona-nox Linu. — The Moon-flower. 

 VAB. grandiflora C. B. Clarke. 



Add to distribution of F. B. I. : — 



Australia : Baron Von Mueller h.as sent (under the name /. longi- 

 flora) to Herb. Calcutta excellent specimens of I. hona-nox with the 

 cuspidate sepals and exserted stamens characteristic of the species. 



As in true I. hona-nox, which hardly differs varietally from this, the stamens 

 are always far exserted. This is well shown in Bheede, Sort. Malabar, xi., t. 50 

 which therefore belongs here and not to the coast moon-flower, where the stamens 

 do not reach beyond the junction of the mid and upper thirds of the tube. Conse- 

 quently Ipomoea grandiflora Lamk, which is based on Rheede's figure, also comes here 

 as to the citation : the diagnosis however applies to I. yomas alone of Indian 

 Calonyctia. 



2. Ipomoea MurnoATA Jacq. — The Pltrplish Moon-floweb. 



