Balsamea] xxxiii. burserace^. 125 



Bumbo. — A shrub of G ft., almost a little tree ; calyx-lobes 4, acu- 

 minate ; petals 4, erect, valvate ; stamens 8, unequally long, inserted 

 on the disk below its margin ; disk urceolate, with a free margin. In 

 bushy places near Bruce ; fl. without leaves Oct. 1859. No. 4491. 



5. B. Mulelame Hiern, sp. n. 



Commiphora (sp.), Ficalho, PI. Ut. p. 114 (1884). 



A dioecious tree, 12 to 25 ft. high, glabrous in most parts, leaf- 

 less at the time of flowering ; trunk straight ; crown dilated ; 

 branches divaricately spreading, spinous by some of tlie branchlets 

 becoming abortive and terminating in hard acute points ; epidermis 

 of the bark greenish-wliite, quite smooth, separating in very thin 

 layers after the fashion of the skin of Betula alba L. Inflores- 

 cence at or near the apex of short branchlets or lateral, g to 1| in. 

 long, glabrous or very nearly so ; peduncles 5 to | in. long, 

 branched at the apex ; ultimate pedicels very short ; bracteole^ 

 ovate, small ; flower-buds scarlet ; flowers tetramerous, ^ in. long ; 

 calyx -jV in. long, reddish, shortly cleft, tube somewhat funnel- 

 shaped, lobes deltoid ; petals oblong, valvate or nearly so in 

 aestivation ; stamens 8, of which 4 are longer than the others and 

 pale greenish-yellow turning reddish and rather fleshy. 



GoLUNGO Alto. — On wooded hills, at the skirts of little woods of 

 Dichrostachi/s, along the right bank of the rivulet Chixe ; fl. Sept. 1857. 

 Negro name in this district "Mulelame," and in Libongo "Mun- 

 golo " ?. No. 4489. Near the stream Chixe, in little woods of Acacia, 

 rather rare ; with young fl. Sept. 1854. No. 4502. 



The following two Nos. in fruit have the branches of the 

 infructescence clothed with short hairs, and should be compared 

 with this species ; the drupes are irregularly oval, about 5 in. 

 long, somewhat compressed, 1 -seeded and based by a small 4-cleft 

 hairy calyx : — 



Libongo.— A tree, 15 to 20 ft. high, much branched ; bark smooth, 

 white-greenish, tb^owing off the epidermis in plates as does Betula 

 alba L. ; branches patent, densely ramulose ; leaves impari-pinnate 

 (not shown on the specimen), absent in the winter (July and August). 

 Probably dioecious. Abundant in the drier forests and still more 

 abundant on the dry hills, in company with species of Aloe, from 

 Libongo to Bombo ; veiy sparingly in fr. Sept. 1858. Negro name 

 " Mungdlo." No. 4499. 



GoLUXGO Alto. — A much-branched bush, 10 ft. high ; bark smooth, 

 white-greenish, the epidermis separating in thin plates as in Betula 

 alba L. ; leaves absent at the time of fruiting ; drupes pea-shaped, 

 black-reddish, a little juicy. Perhaps a female plant of the tree 

 Mulelame. In shrubby situations on the right bank of the rivulet 

 Chixe, between Calolo and Mongolo ; fr. beginning of Sept. 1857. 

 No. 4490. 



6. B. (?) fraxinoides Hiern, sp. n. 



A tree, 30 to 35 ft. high, with the habit of an Ash ; branchlets 

 dark-ashy, minutely warted, glabrate, resinous?, pubescent and 

 leafy at the apex ; leaves (young) alternate, crowded, exstipulate, 

 pinnate, usually paii-pinnate and 4-jugate, 6 to 8 in. long or 

 more; petioles slender, furrowed, glabrate, 1 to 1| in. long; leaflets 



