26 PetRvEa. 



tube, a dry indehiscent capsule, 2- or by abortion 1 -celled 

 and -seeded; seeds laterally attached, without albumen. 



Distribution: tropical America, imported into Java! and 

 Luzon (Merrill). 



1. P. volubilis L. sp. pi. 626, (1753) not of facquin 

 (1763); Schauer, DC. Prodr. XI, 618; Jacquin. Select. 

 Stirp. Am. Hist., 180, t. 114; Koorders, Exk. fl. v. Java, 

 III, 133; Bot. Mag. t. 628; Mariius, Fl. Brasil. IX, 273; 

 Merrill, Bur. Gov. Lab, no. 6, 36; Hall, f., Med. 's Rijks 

 Herb. Leid. no. 37, 22. — A scandent shrub; branchlets, 

 inflorescences, and petioles minutely puberulous; leaves 

 coriaceous, oblong-ovate or elliptical, base rounded, apex 

 subacute, margins entire, glabrous above, somewhat hirsute- 

 hairy on the midrib, glabrous beneath, eglandular; pairs 

 of nerves 8^ — 12, subwingedly prominent beneath, each 

 nerve dichotomously branched before reaching the margin; 

 7—18 by 31/2— 71/2 cM.; petioles 0.5—1 cM. long, 0.2 

 cM. thick; panicles 11 — 17 cM. long; calyx-tuhe 0.25—0.3 

 cM. long, 0.15 — 0.2 cM. wide, pubescent and with some 

 glanduliferous hairs, rather solid ± lO-ribbed, the 5 deltoid 

 teeth ciliate, inner side glabrous; the 5 lobes in fruit 

 membranous, 1.5—2.1 by 0.3—0.4 cM., both sides pubes- 

 cent and glandular, with obtuse apex; corolla with glabrous 

 tube, 10-lined, 0.4 cM.; throat villous; limb oblique, 5-lobed, 

 lobes subequal, both sides pubescent and with glanduliferous 

 hairs, 0.5 cM. long, 0.2 cM. broad; stamens 4, subequal, 

 filaments 0.1 cM., anthers long-ellipsoid, 0.1 cM. with 

 parallel cells; style 0.25 cM. with increased, papillose, 

 oblique stigma; ovary glabrous, 0.17 cM. long, with 

 gynophore (disc); fruit included in the calyx-tube, the 

 inner 5 teeth being closed above it. 



Java: Ploem, Preanger, in H. L.— B. sub no. 909. 27— 4; 

 id. in H. L.— B. sub no. 908.337—73, near Buitenzorg, 

 native name: hampelaas aroi. 



