168 DR. O. STAPF ON THE FLORA OF MOUNT KINABALU. 
the first glance very different, but this difference is evidently and exclusively due to the 
extreme abbreviation of the internodes in the stunted form, and this again is caused by 
the conditions of the habitat. The hairiness or glabrousness is still less constant. There 
are hairy and glabrous stunted, and hairy and glabrous prostrate specimens. The same 
kind of hairiness, though in a minor degree, may be found on the petioles and the 
involucre of a specimen of Trachymene humilis from the Limestone River, collected by 
Sir F. v. Mueller, whilst all other specimens I have seen are glabrous. 
RUBIACEA. 
ARTHROPHYLLUM DIVERSIFOLIUM, Blume, Bijdr. 879. 
On the Tampassuk River near Kiau, alt. 3500 feet (Haviland, 1254). 
Distribution: All over Malaya, from the Andamans and Penang to North Borneo. 
WENDLANDIA PANICULATA, DC., Prodr. iv. 411. 
In young jungle near Kiau, alt. 3000 feet (Haviland, 1366). 
Distribution: Malayan Archipelago, from Java to Borneo and the Moluccas. 
ARGOSTEMMA BRACHYANTHERUM, Stapf, n.sp. Herba simplex e basi prostratá ascendens, 
circa 4 poll. alta. Caulis adpresse hirtello-pubescens. Folia opposita, valde insequalia ; 
majora petiolo 1-14 lin. longo suffulta, elliptica vel ovato-elliptica vel obovato- 
elliptica, 14 poll. longa, 7-9 lin. lata, basi rotundata et plerumque plus minusve 
asymmetrica, breviter acuminata, membranacea, supra obscure viridia, glaberrima 
vel marginem versus vel in margine parce pilosula, supra brunnea, in nervis adpresse 
hirtello-pubescentia, nervis utrinque circiter 8: minora sessilia, plerumque ad subulam 
brevem redacta, rarius lamin’ ovato-lanceolatá ad 3 lin. longi. Stipule ovate ad 
3 lin. longze, obtusze, minute et parce hirtellæ, tenuiter membranaceze. Inflorescentia 
terminalis, breviter pedunculata, umbellatim 3-flora vel ad florem solitarium redacta ; 
pedicelli hirtello-pubescentes 3-4 lin. longi. Calyx turbinatus, adpresse hirtellus ; 
tubus 1 lin. longus, dentes triangulares 1 lin. longi. Corolla alba, breviter campa- 
nulata, 2 lin. longa, ad medium 5-lobata, extus densiuscule hirtella, intus in lobis 
ciliatis papillosa. Filamenta brevissima, tubo imd basi inserta, anthere leviter 
coherentes, oblonge, 3 lin. longe, breviter obtuseque apiculate, rim’ longitudinaliter 
dehiscentes. Stylus filiformis, 2 lin. longus; stigma capitatum. 
At 3000 feet (Haviland, 1326). 
Quite of the habit of 4. uniflorum, Blume, but very different in the structure of the 
androecium ; besides, the lobes of the calyx and the corolla are shorter and broader. 
ARGOSTEMMA GRACILE, Stapf, n. sp. (Pl. XII. n. 10-12.) Herba prostrata in truncis 
arborum deciduarum. Caulis radicans, glaber. Folia opposita, valde inzequalia, 
insigniter disticha; majora brevissime petiolata, oblonga, 5-7 lin. longa, 2-21 lin. 
~ lata, basi rotundata, apice apiculata, membranacea, supra obscure viridia, subtus 
pallida, utrinque in cost& fulvo-hirtella, evenia ; minora subsessilia, ovata, ad 3 lin. 
bs longs, basi i in latere extus spectante auriculata lobo acutiusculo. Stipulæ foliacez, 
