360 WILSON EXPEDITION TO CHINA 



6. Porana dinetoides Schneider, n. spec. 



Frutex scandens; ramuli floriferi flavo-brunnei, angulato-rotundi, contorti, 

 flavo-hirsuto-pubescentes. Folia profunde cordato-ovata v. cordato-rotundata 

 apice subito acuminata, saepe caudata, supra laxius subtus densius pilis flavidis 

 molliter hirsuto-pubescentia, basi 5-nervia, margine integra, ciliata, majora 7-10 

 cm. longa, 4.5-9 cm. lata, minora (inflorescentiarum) 2.5-5.5 cm. longa, 1.2-4 cm. 

 lata; petioli foliorum majorum 3-6 cm., minorum 0.3-1.5 cm. longi, flavo-hirsu- 

 tuli. Infiorescentiae pseudopaniculatae, axillares ; pedunculi circiter 15-fiori, infeme 

 nudi, foliis plus minusve longiores, ut pedicelli flavo-hirsutuli v. glabri; pedicelli 4-7 

 mm. longi, bracteis triplo brevioribus lanceolatis hirsutis suffulti; flores albi, cam- 

 panulati, 7-8 mm. longi, corolla aperta circiter 7 mm. lata; prophylla 2 minima; 

 sepala satis aequalia, anguste lanceolata, glabra v. sparse flavo-hirsutula, tube 

 coroUae vix dimidio breviora; corolla extus glabra, tantum in apicibus loborum satis 

 brevium hirsutulia, intus in basi infra insertionem staminum pilosa ; stamina 5, in- 

 clusa, eodem altitudine inserta, filamentis liberis inaequalibus brevissimis quam an- 

 therae oblongae deinde paulo contortae vix longioribus, ceteris iis 1 3^-2-plo lon- 

 gioribus; gynae ceum sepalis aequilongum, glabrum, disco distincto basi instructum; 

 ovarium ovulis 2 sessilibus praeditum, stylo simplici paulo longiore stigma sim- 

 plex ovato-globosum gerente coronatum. Fructus pro genere normal es, sepalis 

 scariosis 3 valde acutis late oblongis circiter 1 cm. longis 4 mm. latis apiculatis 2 

 paulo brevioribus angustioribus omnibus nervis 5 longitudinaliter percursis glabris 

 circumcincti, elliptico-oblongi, circiter 7 mm. longi, 4 mm. crassi, styli basi coronati, 

 glabri, flavo-brunnei; semen 1, obovato-rotundum, a latere compressum, rubro- 

 brunneum, circiter 6 mm. longum. 



CHINA. Yunnan: Mengtsze, alt. 1700 m., A. Henry (No. 9340, type; 

 climber, flowers white; No. 9340=^; with fruits); same locaUty, alt. 1500 m., A. 

 Henry (No. 9340*^; hairy form with younger inflorescences). 



At first sight this species resembles P. racemosa Roxburgh, but the structure of 

 the flowers is very different. It is somewhat intermediate between the sub- 

 genera Euporana and Dinetus, and I think it best to refer it to a separate sub- 

 genus, Pseudodinetus. The stamens are of unequal length but are inserted in one 

 row; the stigma seems to be different from those of Euporana and of Dinetus, being 

 globular as in the first but also slightly emarginate as in the last subgenus. The 

 inflorescence of the type is glabrous or nearly so, except the small bracts, while 

 in No. 9340'' the peduncles, petioles and sepals are more or less hirsute at least 

 when young. 



Subgenus 3. DINETUS Peter in Engler & Prantl, Nat. Pflanzenfam. IV. Abt. 

 3 a, 25 (1891), exclud. P. paniculata, Roxburgh. 



To this subgenus, the type of which is Porana racemosa Roxburgh, I refer all the 

 species with the exception of P. dinetoides, the ovaries of which contain only two 

 ovules. They have a more distinct narrower tube, and the stamens have very short 

 filaments. According to the size of the flowers there are two distinct groups in this 

 subgenus, the first representing Dinetus proper, the flowers of which are small and 

 all the sepals are equally enlarged on the fruit; and the second with larger flowers 

 and the sepals unequally enlarged on the fruit. (See also the key, p. 358.) 



7. Porana malabarica Clarke in Hooker f., Fl. Brit. Ind. IV. 223 (1883). 

 Porana racemosa Dalzell & Gibson, Bombay Fl. 162 (non Roxburgh, fide Clarke) 



(1861). 



INDIA. Malabar and Concan: without precise locality; Stocks & Law 

 Porana, No. 3, Herb. Ind. Or.). 



This species is closely related to P. racemosa Roxburgh, differing from it ap- 

 parently only in the larger size of the sepals on the fruit. 



