41 



AMPEMDACEAE, 



Tetrastigma cruciatum, Craib et Gagnep., a T. tuberculato, Blume 

 (sub Cisso), stigmate grandi sessili cruciate valde distinctum. 



Ramuli scandentes, glabri, primo fere teretes, graciles, mox 

 compress!, dense tuberculati. Folia trifoliolata, petiolis 2'7-4*5 cm. 

 longis suffulta ; foliola oblanceolata vel anguste obovata, apice 

 acuminata, mucronata, basi terminalia in petiolulum attenuata, 

 lateralia obtusa, parum obliqua, 8-1 1*5 cm. longa, 3'5-5'5 cm. lata, 

 subcoriacea, utrinque glabra, juventute distanter crasse serrata, mox 

 subintegra, subsinuata, nervis lateralibus utrinque 4-6 intra 

 margmem arcuatis pagina neutra valde conspicuis ; petioluli semi- 

 centimetrales, inter se aequales. Injlorescentia axillaris, globosa, 

 congesta, 1 cm. diametro ; pedicelli compressi, 1-2 mm. longi, dense 

 pilosi ; alabastra cylindracea, apice dilatato-truncata, papillata. 

 Calyx brevis, cupuliformis, pilosulus, dentibus triangularibus acutis. 

 Petala alba, deltoidea, fere 2 mm. longa, 1'25 mm. lata, ad marginem 

 apicemque papillata, corniculata, corniculis brevibus divaricatis 

 papillatis 0*5 mm. longis. Discus brevis, annularis, ad basin ovarii 

 adnatus, ovarium strangulans. Stamina f ertilia non visa. Ovarium 

 glabrum, vix 1 mm. altum, loculis 2 biovulatis ; stigma sessile, 

 cruciatum, circiter 1 cm. diametro, ramis 4 divaricatis apice sensim 

 dilatatis truncato-emarginatis. Craib et Gagnep. apud Craib, Kew 

 Bull. 1911, p. 30 ; Fl. Indo-Chine, i. p. 948. 



Chiengmai, in thick evergreen junarle on Doi Sootep, 900 m., 

 Kerr, 599. 



Mons. Gagnepain, who was recently engaged in a study of the 

 species of Vitis and allied genera and who has kindly collaborated 

 with me in the description of this species, has supplied very copious 

 notes on two allies of this plant. 



T. cruciatum differs from T. rupestre, Planch., in (1) its petiolules 

 being equal and its leaflets more symmetric at the base ; (2) its 

 sessile inflorescence ; (3) its corolla not all papillose ; (4) its large 

 Maltese cross-shaped stigma ; and (5) its small acute calyx teeth. 



From T. glabratum, Planch., it is distinguished by (1) its larger 

 leaflets with equal petiolules ; (2) its more condensed and much 

 narrower inflorescence ; (3) its shorter flower buds ; (4) its corni- 

 culate petals ; (5) its large sessile stigma ; and (6) its short acute 

 (not truncate) calyx teeth. 



Mons. Gagnepain further remarks that T. cruciatum possesses 

 the largest stigma of the species examined by him. 



Tetrastigma lanceolarium, Planch, p.p. Vitis lanceolaria, Roxb. 

 -F.B.I., i. p. 660 ; For. Fl. Burma, i. p. 272. 



Chiengmai, Doi Sootep, 720 m., Kcrr, 919. 



Distr. India, Burma, Assam, China, Malay Peninsula. 



Tetrastigma serrulatum, Planch. Gagnep., Lee. Not. Syst., i. 

 p. 322. Vitis capriolata, Don F.B.I., i. p. 659. 



Chiengmai, in evergreen jungle on Doi Sootep, 1260 m., Kerr, 

 1505. 



Distr. N. India, Khasia, China. 



