NEW AND RARE MALAYAN PLANTS. 295: 
RUBIACEAE. 
Tarenna calcarea Ridley, n. sp. 
A shrub with white shining branches. Leaves membranous. 
ovate cuspidate with a long point drying black; base cuneate; 
nerves 4 to 5 pairs; 4 to 5 in. long, 2 to 3 inches wide; petiole 1 
in. long, slender. Stipules short, broad, triangular with short 
points. Cymes 1.5 inches long, terminal, lax, few-flowered ; pedun- 
eles .25 inches long. Bracts short lanceolate acute. Calyx very 
small under .05 in. long, cup-shaped with 5 short acute points. 
Corolla-tube cylindric, rather thick, .12 inches long, lobes oblong, 
blunt nearly as long; anthers acuminate nearly as long as the 
sepals. A little white hair at the base of the corolla-lobes. 
Hab. Limestone rocks. Perak, Ipoh, Ridley. 
Its set of Zarennas are somewhat closely allied and: this is 
nearest to T. adangensis Ridley, but the leaves are larger and 
thinner and the corolla rather small, the throat being only sparsely 
white hairy. Nearly all of the set are inhabitants of limestone 
rocks and each area of limestone seems to have a distinct species or 
variety. 
Pavetta indica Linn. 
This species was based mainly on a drawing of Rheede’s Hortus 
Malabaricus v. p. 19, t. 20. and in the Flora of British India, nearly 
all the Pavettas with large corymbs are put underneath Pavetta 
indica as the species intended by Linnaeus or as varieties of it. It 
seems to me however, that there are a good many distinct species 
included in Pavetta indica Hook. fil., Flora of British India in. 
p- 150. 
I make out the following species. 
Pavetta indica var. canescens. P. canescens, Wallich Cat. 6181, 
Singapore. 
Bush; branches softly velvety hairy. Leaves thin, lanceolate 
narrowed to the base with the nerves and sometimes the whoie leaf 
beneath softly thinly hairy 6 to 8 in. long, 1.75 to 3 in. wide; 
petiole 1 to 1.25 in. long. Corymbs 2 in. long, 3 in. wide on a 
peduncle 2 inches long or less, pubescent. Stipules ovate with a 
long terete point. Flowers white; pedicels slender .1 in. long, 
pubescent. Calyx very small, cup-shaped with very short points 
pubescent. Corolla-tube .5 in. long, slender, lobes oblong blunt, 
apie lone Style .or im long: | 
Hab. Singapore, Wallich; WKranji, Ridley 2880. Malacca, 
Griffith. Negri Sembilan, Johol. Selangor, Ginting Sempah, 
Robinson and Kloss. Perak, Gunong Hijau, Mohamed Haniff and 
Mohamed Nur, 2451, flowers shorter. Changkat Mentri, Kloss 
6510, nearly quite glabrous. 
R. A. Soc., No. 86 1922. 
