506 PLOEA INDICA. \AnonacecE. 



This genus was established as a section of Folyalthia by Blume, who, however, 

 only described one species. It is so well maried, both in characters and habit, that 

 we have no hesitation in regarding it as a distinct genus. The thick, strictly val- 

 yate, and broadly-clawed inner petals, closely connivent into a mitrifonn cap, occur 

 in no other genus. The nearest approach to this structure is found in Oxymitra 

 among Quatteriem ; but there the inner petals are not unguiculate. The species of 

 Goniothalamus appear for the most part to be undershrubs, rarely rising to the size 

 of trees. The leaves of many are very thiclc and coriaceous ; but the thinner-leaved 

 species and the young leaves of the others are pellucid-dotted. The nervation is pe- 

 culiar, the principal veins being connected by loops, which often form a very con- 

 spicuous intramarginal nerve. Many of the species are unfortunately very imper- 

 fectly known, and we are by no means satislied with the diagnoses given, our materials 

 not being sufficient to enable us to form an opinion of the amount of constancy of 

 the characters on which we have relied. "We therefore recommend a careful study 

 of the floral organs of these plants to those botanists who may have an opportunity 

 of observing them in a living state. Goniothalamus appears to be entirely an Asiatic 

 genus. Several species occur among Cuming's PhiUppine plants, and others will 

 probably yet be met with in the Malayan Archipelago. 



1. G. Wightii (H.f. et T.) ; foKis lanoeolatis subtus pallidis gla- 

 briusculis, pedunculis axillaribus solitariis. — Wall. Cat. 9009 ! 

 Hab. In montibus Travancor ad Courtalam, Wight! — (». «.) 



Arhor? RamuH graciles, nigricantes, rugulosi, glabri ; partes novelise fusco-pu- 

 bescentes. Folia utrinque acuta, 3-5 poll, longa, f— 1-^ lata, petiolo 2-3 lineas 

 longo, tenuiter coriacea, subtus pallida (in sicco flavescentia), glabra vel juniora 

 sparse puberula, minutissime pellucido-punctata. PeduncuU i-l-poHicares, snb- 

 clavati, basi bracteis pluribus oblongis minutis pubemlis distiche imbricatis muniti, 

 supra medium bracteola parva rotundata amplectente decidua. Sepala ovata, vix 

 acuta, extus puberula, fere a poll, longa. Petala exteriora f -poll., ovalia vel ovata, 

 obtusa, breviter et late unguiculata, basi intus areola oblonga notata, utrinque fusco- 

 sericea ; interiora \ poll, longa, ovata, late unguiculata, in mitram eoalita, lamina 

 late trapezoidea, acuta, extus fusco-sericea, intus apicem versus sericca, Cccterum 

 glabra. Torus truncatus. Ovaria dense aui'co-strigosa, stylo oblongo apice dilatato 

 compresso retuso dimidio longiora. Carpella calyce persistente suifulta, pedicello 2 

 lineas longo stipitata, oblonga, f -pollicaria, atro-fusca, glabra. 



The style of this species is shorter and broader than that of those described be- 

 low. In this respect it agrees with G. macrophyllus, Blume, the original species of 

 the genus. 



3. G. salicinus (H.f. et T.) ; foliis anguste lanceolatis basi acutia 

 apice in acumen plerumque obtusum longe angustatis, floribus paullo 

 supra-axillaribus semipolliearibus, petalis exterioribus angustis lineari- 

 bus tomentosis. 



Hab. In Zeylania ad montem "Adam's Peak" dictum, Walker ! — 

 (El. Mart.).— («. a.) 



Hamuli graciles, foliosi, cortice ruguloso nigricante; partes novellffi fusco-tomen- 

 tosse. Folia 3-4i poll, longa, i-1 lata, supra glabra, subtus sub lente sparse pu- 

 bescentia ; petioli vix -j-poU., piUs atro-fuscis strigosi, demum glabrescentes. Fedi- 

 celli \ poll, longi, solitarii, pilis atro-fuscis strigosi, a basi ad medium bracteis 3-4 

 minutis oblongis acumiuatis muniti. Sepala ovata, acuminata, dense strigosa, ^- 

 poU. Fetala exteriora -J-poU., lineari-triangularia, interiora dimidio breviora. Ovaria 

 pauca, 7-10, dense fusco-strigosa ; stylo subulate, aequilongo. 



3. G. Thwaitesii (H.f. et T.) ; foliis oblongis breviter et obtuse 

 acuminatis, pedunculis axillaribus petiolos triplo superantibus, floribus 



