PHANEROGAMS— PROFESSOR BAYLEY BALFOUR. 31 



rest are old world forms, one being tropical African alone and the others have 

 a distribution in tropical Africa and south-west Asia, one of them being also 

 abundant in the islands of the Indian Ocean, and one reaching Australia. 



1. H. (Bombicella) intermedins, Ach. Eich. Tent. Flor. Abyss, i. 58 ; 

 Mast, in Oliv. Flor. Trop. Afr. i. 198, and in Hook. Flor. Brit. Ind. i. 336. 



Socotra. On the plains about Galonsir and Tamarida. B.C.S. n. 219. 

 Schweinf. n. 321. 



Distrib. East and north-east tropical Africa, Arabia, and Scindh. 



2. H. (Bombicella) micranthus, Linn. fil. Suppl. 308 ; DC. Prod. i. 453 ; 

 T. Anders, in Journ. Linn. Soc. v. (1860), Suppl. 8 ; Mast, in Oliv. Flor. Trop. 

 Afr. i. 205 and in Hook. Flor. Brit. Ind. i.. 335. 



H. clandestinus, Cav. Ic. i. 1, t. 2. 



H. ovalifolius, Vahl Symb. i. 50 ; Boiss. Flor. Orient, i. 839. 



Socotra. Not uncommon. B.C.S. 148. Schweinf. n. 331. 

 Distrib. Tropical Africa, Arabia, and India. 



A species which varies in Socotra, as it does in other localities of its wide 

 distribution. Schweinfurth sends specimens which show " petala alba reflexa." 



3. H. (Lagunsea) Solandra, L'Her. Stirp. i. 103, t. 49 ; Mast, in Oliv. 

 Flor. Trop. Afr. i. 206, and in Hook. Flor. Brit. Ind. i. 336. 



Latjunma lobata, Wiltd. Sp. iii. 733 ; DC. Prod. i. 474. 

 Solandra lobata, Cav. Diss. v. 279, t. 136, f. 1. 



For an extensive synonymy see authors quoted. 



Socotra. Near Tamarida and Galonsir. B.C.S. n. 150. 



Distrib. East tropical Africa and India. 



A species not far removed from the next mentioned one, H. ternatus, Mast. , 

 with which its resemblance is so close as to make it sometimes difficult to 

 diagnose. The characters to be depended upon are its more robust habit and 

 cream-coloured flowers, with beaked carpels exceeding the calyx. Seeds of 

 this plant from Socotra germinated at Kew, and the plant flowered in 1881. 



4. H. (Lagunsea) ternatus, Mast. (non. Cav.) in Oliv. Flor. Trop. Afr. i. 

 206. 



Laguncea ternata, Willd. Sp. iii. 733 ; DC. Prod. i. 474. 



Socotra. Plains about Tamarida. B.C.S. 425, Schweinf. 297. 

 Distrib. Tropical Africa. 



5. H. (Ketmia) vitifolius, Linn. Sp. 980 ; DC. Prod. i. 450 ; Mast, in 

 Oliv. Flor. Trop. Afr. i. 197, and in Hook. Flor. Brit. lad. i. 338 ; Cav. Diss. iii. 

 145, t. 58, f. 2. 



