146 DR. G. BIRDWOOD ON THE GENUS BOSWELLIA. 
gum much resembling it." Richard says of B. papyrifera, “It distils a resin which, 
when burnt, gives the odour of the incense of India, which, indeed, as every one says, is 
produced by another species of the genus, named 2. serrata, Roxb.” 
4. BoswELLIA THURIFERA, Colebrooke, Asiatic Researches, ix. p. 377, t. 5. 
Diaenosis.—Foliola 8-14-juga, dentata, serrata, vel plus minus obscure et remote serrulata, pubescentia 
v. glabra. Inflorescentia racemosa, racemis compactis, plerumque dense compositis, foliis multo bre- 
vioribus. Fructus late ellipticus, triquetrus, basi vel apice non contractus. 
B. serrata et B. glabra, Roxburgh, Flor. Ind. ii. p. 383, 384. 
B. glabra, Roxburgh, Cor. ii. t. 207. 
Var. «. Foliola ovato-oblonga, truncata vel late rotundata basi, serrata, infra pube- 
scentia. 
Var. 8. Foliola lineari-lanceolata, oblique contracta basi, nonnunquam obscurissime vel 
remote serrulata, propemodum glabra. 
Habitat in montibus Indiæ tropicæ, * Salai,” “Saleh” incolarum ; Oude et Rohilcund, Royle; Behar, 
Hooker ; Concan, Stocks ; Kattyawar, Khandeish, H. M. Birdwood. 
Descriptio.—Arbor parva ; petala patentia, infra pubescentia, valde rosacea, v. albida ; 
stamina alterna breviora; discus ruber, v. inconspicuus. 
Remarks.—The natives of India recognize the two varieties of this plant, of which 
Roxburgh made two species, and distinguish between their gum-resins. What I have 
seen ofit has been either stalactiform, like the runnings of a wax candle, or in small tears, 
and always so soft that, when kept in a bottle, in a short time it has run into an oleo- 
resinous mass, with the smell of frankincense, but more turpentiny. I often and perse- 
veringly tried to get regular tears of olibanum from this plant, but never succeeded in 
getting anything else than soft, oleo-resinous * runnings" from it, which, even after 
months' exposure on the trunk, still remained quite soft. 
In Khandeish the olibanum produced by this plant is sold under the name of ** Dup- 
Salai ” [%. e, incense of Salai] in the village bazars. But 1 have never myself seen it 
exposed for sale. I have had samples sent to me from all parts of India, and all soft 
and always melting at last into a mass. 
The most remarkable character of this plant is the way in which its leaves and flowers 
vary. Sometimes the inflorescence is in loose cymes, sometimes gathered into a knotty 
head or capitulum. Ina plant brought by my brother from Kattyawar, the petals were 
reduced to mere scales, the disk very fleshy, red, and prominent, and the stamens 
tending to abortion. 
Sectio II. Frutex glaber, glaucus, disco explanato. 
5. BOSWELLIA FREREANA, Birdwood, n. sp. (Tab. XXXIT.) 
DiacNosrs.— Folia omnia glabra et glauca; foliola 3-6-juga, late ovata, elliptica, valde obtusa utrinque, 
undulata. Inflorescentia in racemis compositis, foliis multo longior. Fructus ovato-oblongus. 
Habitat in montibus calcareis Soumaliensis regionis prope “ Bunder Murayha," Cruttenden, Kempthorne, 
et Vaughan; “Yegaar” Soumaliensium, Playfair. 
