4 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[Vdl 9, No. 1 



1946, 16250. Portuguese East Africa, Nyasaland, and S. , Rhodesia; doubtfully 

 in Uganda, Kenya, and Tanganyika Territory. 



BORAGIN ACE AE 



Ehretia araoena Klotzsch in Peters, F.eise Mossamb. Bot. 248. pi. 41. 1861; Bak. 

 & Wright in Thiselton-Dyer, Fl. Trop. Afr. 4 2 : 24. 1905. 

 Ehretia stuhlmannii Gurke in Engl. Pflanzenw. Ost-Afr. C: 336. 1895; Bak. & Wright 

 in Thiselton-Dyer, Fl. Trop. Afr. 4 2 : 27. 1905. 



Chikwawa District: Chikwawa, occasional in Acacia albida woodland, tree 

 or shrub 4-5 m. high, almost past flowering, flower white, fruit immature, 200 m., 

 Oct. 3, 1946, 17921. Coastal belt of Kenya and Tanganyika Territory, southwards 

 to Portuguese East Africa and Barberton in the Transvaal; this is the first record 

 for Nyasaland. 



There has been much confusion about this species in the past, chiefly owing 

 to needless confusion with E. caerulea Gurke, and Baker and Wright's placing 

 of E. amoena and E. stuhlmannii in different sections of their inadequate key in 

 the Flora of tropical Africa. 



E. stuhlmannii differs from E. amoena, of which there is an authentic speci- 

 men at Kew, merely in the larger broader leaves, and, besides the existence of 

 all intermediates, I cannot see that this is enough to separate species, at any 

 rate here. 



Baker and Wright (I.e.) sank E. mossambicensis Klotzsch under E. amoena. 

 I doubt this, and suspect rather that E. mossambicensis is an earlier name for 

 E. caerulea; hut am bound to admit that Klotzsch describes the calyx of E. 

 mossambicensis as "zweimal kiirzer ais die Blutenkrone" — a character that fits 

 E. amoena, but not E. caerulea, unless, as the accompanying plate rather sug- 

 gests, the floral measurements of E. mossambicensis were taken from buds. In 

 any case, unless an authentic specimen of E. mossambicensis is forthcoming, 

 I suggest that the latter name be taken as a nomen dubium, and the unambiguous 

 E. caerulea Gurke retained. 



The most obvious features separating E. amoena and E. caerulea are as 

 follows. 



E. amoena: inflorescence densely pubescent but eglandular; corolla-tube 

 equalling or up to 1% times as long as the calyx. 



E. caerulea: inflorescence densely glandular-pubescent; corolla-tube 2-3 

 times as long as the calyx. 



I have not seen the type (Dehn 697) of Ehretia caerulea Gurke var. glandulosa 

 Susseng. Trans. Rhod. Sci. Ass. 43: 42 (1951), said to differ from E. caerulea 

 in having glandular inflorescence-branches and calyces. But, as Gurke in his 

 original description of E. caerulea mentions glands on the calyx, and an isotype 

 at Kew (Goetze 484) shows plenty of glands on the inflorescence and calyces, 

 it looks as though Sussenguth has separated typical E. caerulea from itself. 



Ehretia cymosa Thonn. in Schum. & Thonn. Beskr. Guin. PL 129 (1827) var. 

 divaricata (Bak.) Brenan, comb. nov e 

 Ehretia divaricata Bak. Kew Bull. 1894: 28. 1894; Bak. & Wright in Thiselton-Dyer, 

 Fl. Trop. Afr. 4 2 : 26. 190 5. 



Cholo District: Cholo Mountain, frequent in rain-forest canopy layer, tree 

 25 m. tall and to 0.5 m. in diameter, flowers white, produced in great abundance, 

 1400 m., Sept. 26, 1946, 17816. For distribution see below. 



E. cymosa Thonn. is antedated by E. cymosa Willd. ex Roem. & Schult. Syst. 

 Veg. 4: 805 (1819). Although this latter name is accompanied by a brief diagno- 

 sis, my colleague Mr. H. K. Airy-Shaw has kindly given me his opinion that E. 



