144. DR. G. BIRDWOOD ON THE GENUS BOSWELLIA. 
the Vietoria Gardens from cuttings of the same, and the flowers gathered by Playfair in 
June 1867 from the young plants growing in the Aden Garden from cuttings of the 
same, and sent by him to the Herbarium at Kew. 
The tree found by Carter growing in the limestone formation about Merbat and Ras 
Fartak, the * Maghrayt d'sheehaz" of the Maharas, is probably a smaller tree in habit. 
The plant which he brought from the Hadramaut to Bombay, is to this day growing 
there in the Victoria Gardens ; and whilst it is almost impossible to distinguish its leaves 
from those of the “ Mohr Madow ” of the Soumalis, except from their being smaller and 
more crumpled, it is not more than half the height of the plants of ** Mohr Madow " 
propagated in the Victoria Gardens from the cuttings sent to Bombay by Playfair, and 
which are already about 9 feet high. In * Maghrayt d'sheehaz," the leaves have some- 
times five pairs only of leaflets. 
Playfair's dried specimens of leaves of “Mohr Madow,” sent to Kew and Bombay, 
include two very distinct varieties,—one crenate, undulate, and pubescent on both 
sides; the other undulate and obscurely serrulate or almost entire, and velvety and 
paler below and glabrous above. The plants of “ Mohr Madow ” in the Victoria Gardens 
and in Playfair's Garden at Aden have as yet shown only the former variety of leaf, and 
the plant * Maghrayt d'sheehaz" in the Victoria Gardens never has shown any other; 
but from the analogy of B. thurifera and B. Bhau-Dajiana (“ Mohr Add ”) I am led to 
believe that the two kinds of leaves included in Playfair's dried specimens of ** Mohr 
Madow " are only varieties of leaf of one species, and not leaves of two distinct species 
of Boswellia. I have therefore included the description of both leaves in my description 
of B. Carterii, but not without uncertainty. 
29 
2. BoswELLIA BHAU-DAJIANA, Birdwood, n. sp. (Tab. XXXI.) 
Draewosis.— Ramuli terminales, modice puberuli vel glabri; foliola 7-10-juga, oblongo-lanceolata vel 
oblonga, late rotundata vel basi truncata, aut serrata et pubescentia, aut obscure serrulata et infra 
` incana, supra glabra. Inflorescentia in simplicifasciculatis racemis. Fructus immaturus oblongo- 
contractus basi. 
Habitat in montibus Soumali, “ Mohr Add ” incolarum, Playfair. 
Descriptio.—Arbor parva; folia aut pubescentia, foliolis ER aut supra glabra et 
infra incana foliolis obscure serratulis vel integerrimis, longa 1 poll. ad 13 et 2 poll. et 
lata 3-3 poll.; 5 vel 6 racemi in quoque fasciculo, foliis paulo breviores; flores numero- 
sissimi, corolla vix patentissima, petala alba v. viridula; discus valde pubescens, virescens, 
ovarium disco concavo haud adpresso semiimmersum ; drupa subclavata. 
Remarks.—Playfair's dried specimens of leaves of ** Mohr Add," sent to Bombay, 
include two distinct varieties, the leaflets in one being serrulate and downy, in the other 
obscurely and remotely serrulate or entire, and hoary beneath, and glabrous above. The 
latter is the only variety of leaf sent by him to Kew. But in one of his dried specimens 
of ** Mohr Add ” sent to Bombay, both these varieties of leaf are seen in the same speci- 
men. The plants in the Victoria Gardens all showed the pubescent and serrate variety 
of leaf until last year, when one threw out both the varieties of leaf described, and a 
third variety also of intermediate character. The plant from which I gathered the flower - 
