DISCIFLOR^. 21 



From the gardens at "The Tanks," Aden, 21 Jan., 1872 ; 

 Dr. Thos. Thomson. 



This sheet has leaves from different trees ; the tallest tree 

 9-10 feet high, with a trunk as thick as a man's 

 VTist ; the smallest 2 or 3 feet high. 

 d. Ditto, several detached leaves. 



Bombay Gardens. Dr. Birdwood states that ("he thinks" 

 D.H.) he gathered these three leaves from one and 

 the same tree at the same date, 1868. [The right 

 hand leaf corresponds with Boswellia, No. 4, Oliver.] 



100. Boswellia Carterii, Birdw. " Mohr Madow." 

 Var. A. 



a, h, c. Leafy twig. 



d. Leaves without stem. 



Somali Country ; Captn. Playfair ; received in England 



Dec. 1862. Boswellia No. 5 ; see Oliver, Fl. Trop. 



Africa, vol. i. (1868) p. 324; Birdwood, Trans. Linn. 



Soc. vol. xxvii., t. 29. 

 [The leaves on a, c, and d specimens have ciuious small 



urceolate galls on the under siu-face.] 



e. Leafy twig with stem and flowers. 

 /, ff- Leafy twigs. 



From one of the trees in the gardens at the Tanks at Aden ; 

 J. Collins ; received in England 1874. 



Var. B. 



Boswellia No. 6, Oliver, ('Fl. Trop. Africa, L (1868) p 324.") 



a. Leafy twig. 



Somali Country ; Captn. Playfair. This is the first varietj' 

 described in Birdwood's memoir (l.c.p. 144) as having 

 leaves "crenate-undulate and pubescent on both sides.'' 

 [The veins are more numerous and closer together 

 and the veinlets more prominent than in the typical 

 specimens of B. Carteiii.'] 



Vax. C. " Maghrayt d' Sheehaz." 



a. (1) Leafy twig ; (2) leaf only (5. /toe/era. Carter ?) 



(1) From Dr. Birdwood, Bombay, June, 1868. 



(2) Victoria Gardens, Bombay, April, 1870 ; E. Samuel. 



Dr. Carter's Boswellia. About 1\ feet high, much 

 branched, with smooth greyish bark. To this sheet 

 Carter's illustration, of B. thurifera 1 Carter, non 

 Colebrook, from the Journ. Bombay Branch of the 

 Asiat. Soc. ii., t. 23, is attached. 



