PHANEROGAMS— PROFESSOR BAYLEY BALFOUR. 81 



not unlike an epigyny. This is quite an exceptional feature in the tribe, 

 and with other characters is sufficient to warrant the constitution of this 

 new genus. 



A. gracile, Balf. fil. (loc. cit). Tab. XXI. 



Arbor 30-pedalis ramulis strictis angulatis tenuibus pubescentibus. Folia 1^-lf poll, longa 

 petiolata (petiolo £ poll, longo) ; foliola 5-7 longe obovata et ad basim attenuata breviter 

 petiolulata Jpl poll, longa obtusa emarginata v. apiculata iritegra supra glabra viridia 

 subtus albida v. pallidiora obscureque puberula. Stipulce ^ poll, longse subulatae pubeso 

 entes. Pedicelli tenues strigulosi ^-| poll, longi ; bracteolse involucri imbricatse late 

 obovatae cuspidatae ^ poll, longae extus pubescentes. Calyx extus adpresse puberulus, 

 tubo \ poll, longo, labio superiore oblongo \ poll, longo, inferiore lanceolato. Corollm 

 vexillum vix \ poll. diam. Ovarium glabrum breve -j\y poll, longum pauciovulatum ; 

 stylus glaber \ poll, longus exsertus. Lcgumen breve f poll, longum £ poll, latum 2-5- 

 articulatum sed saepe abortu 1-articulatum. 



Nom. Vern. Heimha (B.C.S.). 



Socotra. On the hills near Tamarida and elsewhere. B.C.S. nn. 368, 

 449. Schweinf. n. 511. 

 Distrib. Endemic. 

 A very beautiful tree, and the only species of the genus known. 



13. ZORNIA. 



Zornia, Gmel. Syst. Nat. 1076 ; Benth. et Hook. Gen. PI. i 518. 



A small genus of American distribution, but with one south and west 

 African species, and another (the plant in Socotra) polymorphous one, found 

 everywhere in the tropics. 



Z. diphylla, Pers. Synops. ii. 318 ; Baker in Oliv. Flor. Trop. Afr. ii. 158, 

 and in Hook. Flor. Brit. Ind. ii. 147 ; Benth. in Mart. Flor. Bras. xv. i. 80, tt. 

 21, 22. 



Socotra. On Haghier near Hadibu plain. B.C.S. n. 258. 



Distrib. Everywhere in the tropics. 



The Socotran plant is the commonest Asiatic and African form, with the 

 leaflets of the lower leaves small and, ovate, and those of the upper ones 

 lanceolate and linear. 



14. DESMODIUM. 



Desmodium, Desv. Journ. Bot. i. (iii. 1813), 122, t. 5, f. 15 ; Benth. et Hook. Gen. PI. i. 519. 

 TRANS. ROY. S0C. EDIN. VOL. XXXI. L 



