ANNONACEAE 
Artabotrys Petelotii sp. nov. CT jaea LI. 1ÈZ./952 
Frutex scandens partibus junioribus et foliis subtus plus minusve pu- 
bescentibus, ramis teretibus, glabris vel subglabris, ramulis ultimis 1.5-2 
mm. diametro, dense breviter pubescentibus; foliis chartaceis, plerumque 
oblongis vel oblongo-ellipticis, aliquando deorsum leviter angustatis, 9-14 
cm. longis, 3-5.5 cm. latis, obtuse acuminatis, basi late acutis, supra nitidis, 
glabris vel secus costam breviter pubescentibus, in sicco pallidis, subtus 
subopacis praesertim secus costam nervosque consperse molliter breviter 
pubescentibus; nervis primariis utrinque 9-12, distantibus, curvatis, subtus 
elevatis, perspicuis, arcuato-anastomosantibus; inflorescentiis oppositifoliis, 
uncatis, ligneis, pubescentibus, 1-floris; floribus flavidis, pedicellis circiter 
8 mm. longis, pubescentibus, sursum incrassatis; sepalis ovatis, acuminatis, 
4.5—5 mm. longis, coriaceis, extus pubescentibus, intus subglabris vel leviter 
pubescentibus; petalis crassissime coriaceis, utrinque dense breviter sub- 
cinereo-pubescentibus, exterioribus 2 cm. longis, oblongo-lanceolatis, obtu- 
sis, planis, 6 mm. latis, basi cupulatis, intus glabris, petalis interioribus 
minoribus, subteretibus vel leviter compressis, ad 2 mm. crassis, rectis vel 
leviter curvatis, partibus basalibus planis, intus glabris, extus ad basin parti- 
bus liberis distincte subauriculatis; staminibus numerosis, 2 mm. longis, 
deorsum angustatis, connectivo circiter 1 mm. diametro, subtruncato-con- 
vexo; Carpellis circiter 6, oblongo-ovoideis, densissime adpresse hirsutis; 
stylis crassis, 1 mm. longis, glabris, subteretibus. 
Ixpo-CHiINA, Tonkin, Bac Giang Province, near Pho Vi, Pételot 4857, June 1933, 
a large vine With yellow flowers, in forests. 
The alliance of this species is clearly with ro. unifiorus (Griff.) 
Craib, Kew Bull. 435. 1915, described and well illustrated by King, Ann. 
Bot. Gard. Calcutta 4: 47. #. 62. 1893 as À. burmanicus (non A. DC.!), 
one of the few species in this alliance that has densely hirsute ovaries. It 
differs in its somewhat smaller flowers, relatively broader outer petals and 
relatively narrower, almost terete, inner ones, and its bluntly, rather than 
acutely acuminate leaves, the main nerves interarching once within the 
margins, not twice as in Griffith’s species. Gagnepain gives a very brief 
description of À. burmanicus À. DC. on the basis of Pierre 104 from Siam, 
a fruiting specimen, giving its range as “Toute la Presqu’ile Malaise.” 
Ridley does not admit the species in his Flora of the Malay Peninsula, and 
1942] MERRILL, RECORDS OF INDO-CHINESE PLANTS, III 
163 
Craib, F1. Siam. Enum. 1: 33. 1925, states that Gagnepain’s description 
does not apply to Aréabotrys burmanicus A. DC., but that it suggests 4. 
siamensis Miq., and does not admit the former as definitely occurring in 
Siam. À. burmanicus À. DC. is a species quite distinct from À. #miflorus 
(Griff.) Craib. 
