176 JOURNAL OF THE ARNOLD ARBORETUM [vOL. xxm1I 
Ixpo-CæiNA, Tonkin, Sontoy Province, Da Chong, Pételot 2658, 7949 (rvre), May 
7, 1936 and May 4, 1940. CæiNA, Yunnan, Ping-pien Hsien, T'sai 60361, June 20, 1934, 
in ravines, altitude about 1100 m. 
Gomphandra mollis Merr. is well characterized by its indumentum and 
its subcapitately arranged flowers on the four radiating branches of the 
leaf-opposed inflorescence. When first examined the material was referred 
to Gomphandra oppositifolia Pierre (Séemonurus oppositifolius Howard, 
Jour. Arnold Arb. 21: 469. 1940), where it certainly does not belong. 
Pierre’s type, a fruiting specimen, the flowers still unknown, was from 
Bien-hoa, near Saigon, in southern Indo-China. 
Gomphandra Petelotii sp. nov. 
Arbor circiter 8 m. alta, glabra, vel partibus novellis inflorescentiisque 
plus minusve breviter pubescentibus, ramis teretibus, glabris, ramulis ulti- 
mis circiter 1 mm. diametro; foliis oblongis, oblongo-ellipticis vel late 
oblongo-lanceolatis, subchartaceis, in sicco atris, subtus paullo pallidioribus, 
5-9 cm. longis, 2-3 cm. latis, breviter subobtuse acuminatis, basi late acutis 
vel subrotundatis; nervis primariis utrinque circiter 6, supra obscuris vel 
obsoletis, subtus haud perspicuis, circiter ad marginem obscure arcuato- 
anastomosantibus, reticulis obsoletis; petiolo 5-7 mm. longo, glabro; inflo- 
rescentiis terminalibus et in axillis superioribus, subcymosis, obscure pube- 
scentibus glabrescentibus, 1.5-2 cm. longis, ad 2 cm. latis, pedunculatis, 
pedunculo 5-8 mm. longo, apice subradiatim 4-ramoso, ramis pedunculum 
subaequantibus, patulis, floribus in ramulis ultimis paucis, subcymosim 
dispositis, subsessilibus vel breviter pedicellatis, pedicellis 1-2 mm. longis: 
floribus 4 4-5-meris, 3.5-4 mm. longis, glabris; calycibus late cupulatis, 
circiter 1 mm. diametro, 0.5-0.7 mm. altis, obscure 4-5-denticulatis; corollae 
tubo 2.5 mm. longo, lobis 4-5, ovatis, circiter 1.5 mm. longis, graciliter. 
acuminatis, acuminibus inflexis; staminibus plerumque 5, fillamentis planis, 
circiter 3 mm. longis, sursum 0.5 mm. latis, deorsum angustatis, infra medio 
glabris, supra medio intus barbatis, pilis pellucidis, flaccidis, apicibus plus 
minusve clavatis, superioribus antheros excedentibus; antheris ellipsoideis, 
0.8 mm. longis; ovarii rudimento glabro, subconico, acuto, 1 mm. longo, 
floribus © fructibusque ignotis. 
INpo-CHINA, Sontoy Province, Mount Bavi, Pételot 2647, May 18, 1940, in open 
forests, alt. Dee 500 m. 
À species characterized by its short, radiately 4-branched, terminal and 
axillary inflorescences and its relatively small obscurely nerved leaves, the 
Se tie obsolete pr subèbsolete, the few flowers cymosely nasal on 
the uitimate branches of the iniloesaones, Its general alliance is with the 
Chinese Gomphandra Chingiana (Hand.-Maz.) Sleumer. 
In retaining Gomphandra Wallich as a valid genus distinct from Sfemon- 
urus Blume, I follow Koorders & Valeton, Bijdr. Boomsoort. Java 5: 
144-151. 1900 (Meded. Lands Plant. 23: 144-151). In describing the 
genus, Blume, Bijdr. 643. 1825, included four species, S. pauciflorus B1., 
S. secundifiorus BI. and S. javanicus BI. which he placed in his section one 
(unnamed), and S. frutescens BI. which he placed in his section Anacolosa. 
He indicated no type. Siemonurus frutescens BI. is eliminated from con- 
sideration, as in Mus. Bot. Lugd.-Bat. 1: 250-251. 1850 he raised this 
section to generic rank, the type being Anacolosa frutescens (Blume) Blume. 
