PHANEROGAMS— PROFESSOR BAYLEY BALFOUR. 51 



of B. serrata, Roxb. (ex. Colebr. in Asiat. Res. ix. 379 cum tab.). It is at 

 once distinguished, however, by its long inflorescences and large flowers. 



3. Boswellia sp. 



Soeotra. On the hills south-west of Galonsir. B.C.S. n. 724. 



Specimens in leaf of a Boswellia, which may be the juvenile form of one or 

 other of the preceding, but it is impossible to decide. It differs somewhat from 

 both of them. 



4. B. socotrana, Balf. fil. in Proc. Roy. Soc. Edin. xi. (1882), 505 ; Engl, 

 in DC. Monog. Phanerog. iv. (1883), Addit. 537. Tab. XI. 



Atboreacortice non papyraceo ; foliis parvis multifoliolatis glabris rhachi alata, foliolis sessilibus 

 oblongo-ellipticis obfcusis ssepe emarginatis integris revolutis ; paniculis paucifloris breviter 

 pedunculitis foliis brevioribus, pedicellis brevibus floribus brevioribus ; capsulis trigono- 

 ovoideis sessilibus. 



Arbor balsamiflua 30-pedalis cortice non papyraceo coriaceo. Rami terminales diametro uniformi 

 subcrassi cum baseis foliorum delapsorum rugosi et cicatricosi. Folia ad apices ramorum 

 conferta 4-4^ poll, longi impari-multifoliolati glabri, rhachi alata ; foliola 23-27 opposita 

 sed prope basin frequenter alternantia sessilia \-} 2 poll, longa \ poll, lata oblongo-elliptica 

 v. elliptica v. fere obovata, terminali maximo et nonnunquam pinnatifido, obtusa saepe 

 emarginata subobliqua integra revoluta, juvenilia tridentata. Paniculi axillares inter folia 

 dispositi pauciflori, pedunculo \ poll, longo subtiliter puberulo ; pedicelli breves crassi 

 \~(T\2 P ^- l° n gi- Flores expansi £ poll. diam. Alabastri 5-goni. Calyx ^ poll, longus 

 5-lobatus, lobis triangulari-apiculatis incrassatis obscure ciliatis. Petala 5-6 | poll, longa 

 ovata carinata apice inflexa basi contracta subtiliter puberula. Stamina alterne minora, 

 filamentis complanatis plusminusve subulato-acumioatis extus ad marginem disci inserta ; 

 antherse staminum minorum filamentis cequilongae v. longiores sparsim puberulae. Discus 

 undulatus intus dense puberulus. Ovarium sessile trigonum triloculare sursum in stylum 

 crassum attenuatum glabrum, stigmate trilobato. Capsula sessilia trigono-ovoidea £ poll. 

 diam. trivalva margiuibus carpellorum in juga prominentia productis. 



Nom. Vern. Haliof. 



Soeotra. On the Haghier hills. Not uncommon. B.C.S. n. 466. 

 Schweinf. n. 530. 



Distrib. Endemic. 



One of the Luban or frankincense trees of the island. It is a very distinct 

 species, quite unlike any of the other species of the genus both in foliage and 

 flowers. We only obtained specimens with flower-buds, but Schweinfurth 

 sends splendid fruited and flowered specimens. The tree produces a consider- 

 able quantity of gum-resin, which they say is used as incense in the mosques. 

 It is not much prized, however, and I should suppose not much, if at all, exported, 

 if one may judge by the ready way the inhabitants gave it to us. But I have 

 no precise knowledge as to its being exported. Schweinfurth says the bark of 

 this is used as tanners' bark. 



