110 D. Prain — Some additional species 0/ Convolvulacese. [No. 2, 



the sepals, which are narrower and acute in the latter." This appears to be the only 

 tangible distinction, and is perhaps hardly sufficient to separate the two plants ; till 

 however, full material of Ipomcsa Wattii is available it would be improper to propose 

 the formal reduction of Mr. Clarke's species, a description of which, taken from the 

 author's original diagnosis and figure, is given here. 



45 c. Ipomoea Wattii Clarice, Journ. Linn. Soc. xxv., 49, t. 22 ; 

 leaves ovate-cordate acute, sparingly hairy above and on the nerves 

 beneath, peduncles long, 3-5-fld., sepals v^idely oblong acute, hairy. 



Naga Hills : Kohima, alt. 5,000 feet, Clarke. 



Scandent. Leaves 3^-2^ in., somewhat deeply cordate ; petiole 2—3 in. Peduncles 

 3-5 in., pedicels 1 in. Sepals |-i in. Corolla I4 in. long, and as much across, white 

 with a purple tinge. Capsule glabrous ^-J in. diam., seeds glabrous. 



The chief difference, apparently the only one, between this and Ipomcea rubens 

 lies, as already said, in the sepals, which are here widely oblong acute, while in 

 I. rubens they are widely oblong obtuse and rather shorter. 



From the figure quoted, the artist has altogether omitted the tomentum of 

 leaves and calyx, while the sepals are shown as lanceolate instead of widely oblong. 



46. Ipomoea petaloidea Choisy. 



VAR. typica ; add to localities of F. B. I. : — 



Behar : Kurz! Wood! Revd. Campbell! Centl. India : Grodaveri 

 district, Beddome ! Gamble! Sagor, Vicary ! 



VAR. pauciflora Clarke, Flor. Brit. Ind. iv., 212. I. petaloidea, var. ? 

 foliis fere linearibus Coll. Sf Hemsl., Journ. Linn. Soc, xxviii., 97. I. 

 petaloidea var. linearifolia Kvrz. Mss. in Herb. Calc. Add to localities : — 



BcRMA : Pegu, at Palawa Zeik, Tonkyeghat, Kurz ! Shan Hills, at 

 Pwehla, 4000 feet, Collet t ! Southern Shan States, Manders ! 



This very distinct-looking variety has also been collected by Dr. King near 

 Mussorie, in the district where it was first obtained by Dr. Thomson. 



VAR. andamanica Prain ; sepals larger, enlarging in fruit, capsule 

 much larger. Convolvulus platypeltis Span. Linnea xv., 338. 



Andamans : KtLrz ! King's Collectors ! Common. Distrib : Timor. 

 The fruit of this closely resembles Tpotncea lactea Wall., but the corolla is much 

 smaller and is shaggy externally. Spanoghe's Timor plant, referred by Miquel to 

 I. petaloidea, is evidently this form. 



46 b. Ipomoea Kixgii Prain : leaves narrow ovate cordate acute 

 vrith shallow or deep rounded sinus and rounded auricles, glabrous 

 above or with the midrib sometimes puberulous, sparingly hirsute on 

 the nerves beneath, petioles long puberulous ; peduncles glabrous longer 

 than the petioles, bearing sometimes 1-3, more often a lax branching 

 cyme of 5-12 flowers, with long smooth pedicels thickened, even in 

 flower, under the calyx ; flowers large, sepals broad ovate obtuse glab- 

 rous coi'iaceous, with membranous margins nearly equal ; corolla wide 

 campanulate glabrous exernally ; capsule large, seeds uniformly covered 



