337 



E. gracile and E. grande, var. homostylum, have stigma and 

 anthers at the same level. 



E. Baumianum has long-styled flowers, whilst in E. debile, 

 E. platypterum. E. pumilum, E. chionanthurn, and E. Teuszii the 

 flowers have short styles. From the scanty material it is not 

 possible to say whether any other species are dimorphic, though 

 it seems highly probable that two forms of flower will be found in 

 the larger flowered species. 



Exochaeniurn Mechowianum, Schinz in Bull. Herb. Boiss., vi., 

 1906, 808, has been omitted from the list given above. This plant 



Naturf. 



Medio 



He? 



It is, I believe, a species of Tachiadenus, both on account of the 

 absence of the disk-glands at the base of the calyx, and more 

 especially of the character of its elongated style, equal in length 

 to the corolla-tube, with its short bilobed stigma some distance 

 above the anthers. 



The assignment of this plant from Angola to the genus Tachia- 

 denus is of some interest, since all the other species of the genus 



Madaga 



w.m 



Belmontia Mechowiana, Vatke ex Schinz in Vierteljahrschr. 

 Naturf. Gesellsch, Zurich, xxxvii, 1891, 333 ; Baker et Brown in 

 Flor. Trop. Africa, iv., 1, 553. 



Exochaeniurn Mechowianum, Schinz, in Bull. Herb. Boiss., 

 ser. II., vi., 1906, 808. 



Benguella. Bank of Hamba, near Gambo, Mechow, 503 ! 



Exochaeniurn grande, Griseb. in DC. Prodr., ix., 1845, 55 ; Welw. 

 in Trans. Linn. Soc, xxvii., 1869, 49 ; Schinz in Bull. Herb. Boiss., 

 ser. II., vi., 1906, 745. 



Belmontia grandly E. Mey., Comm, 1837, 183; Schinz in 

 Vierteljahrochr. Naturf. Gesellsch., Ziirich, xxxvii., 330 ; Baker 

 et Brown in Flor. Trop. Africa, iv., 1, 1904, 533, in part. 



Sebaea grand ix, Steud., Nom., ed. 2, 1841, 550. 



Parasia grandis, Hiern. Cat. of Welw. Afr. PI., part iii., 1898, 

 707 ; var. major, Moore in Journ. Bot., 1902, 384. 



Exochaeniurn grande, Griseb., var. major, Schinz in Bull. Herb. 

 Boiss., ser. II., vi., 1906, 802. 



Cape Colony. Transkei : Tsomo, Mrs. Barber, 856 1 Tembu- 

 land : Bazeia, alt. 2000 ft, Baur % 155 ! Pondoland : between 

 Umtentu River and Umzinkulu River, below 500 ft., Vrege ! 



Orange River Colony. Thaba'Nchu, Burke, 2051 \ Miss 



Trollops I Free State Flats, Mrs. Barber ! near Hamsmith, alt. 

 5500 ft., Sank*, 176 ! between Rhenoster River and Vaal River 



M? 



Coop. 



1192 I 



Caledon River, Mrs 



Hall 



