FLORA ARADICA 
293 
0. Adcnium R. et S. 
1. A. arabicum Balf. f. Tran.s. Roy. Soc. Edinb. xxx, 162. — A, Uonghel 
Bot. Reg. xxxii, t. 54 (Ic. tautura, non descript.) non DC. Prodr. viii, 412 ; 
Blatt. FI. Aden (1915) 240 . — A obesum Anders. FI. Aden. (Ib60) 23 (syn. partim 
excl.) non Roem. et Schult . — A. obesum Hook. Bot. Mag. t. 5918 (Ic. tantum, 
non descript.). 
Habitat : II. Aden (S. 69 ! Birdw. 86 ! Beevoi’ 67 ! T. Anders. ! Thomson ! 
Hook. 103 ! Playfair ! Defl. ! Balfour ! ). 
Fl. : Mar. 1862 (Playfair), May 1859 (Anders.), Dec. (S.). 
Fr. : Mar. 1862 (Playfair). 
Distrib. : Endemic. 
Vem. name: Aden, Dobbiana (S,). 
Notb : According to Schamann (Symb. Phys. Pars Bot. 1900, p. 5) another species of 
Adenium would occur at Aden, via. : — 
Adeuium obesum (Forsk.) Roem. et Scliult- Syst. Veg, iv, 411, of which he gives the 
following syuonyms : 
Adeuium Houghel A. DC. in DC. Prodr. viii, 412. 
Kerium obesum Forsk. Fl. Aeg.-Arab. 205. 
Cameraria obcsa Sprengel Syst. i, 641. 
Pacby podium obesum G. Don Qea. Syst. iv, 80. 
Adenium arborescens Ehrenberg. 
In addition he wishes to be included : Adeuium multiflorum Kl. and A. Boehmianum 
Schinz. 
I doubt whether there are two species of Adenium at Aden. The specimens I have been 
able to enamine do certainly not belong to Adenium obesum Roem. et Schult., but to A. arabicum 
Balf. The genus requires careful revision, and as its representatives are very variable, there 
is no hope of deciding the numerous doubtful points without detailed observations in loco, 
Cf. etiam Balfour in his Botany of Socotra and Stapf’ diagnoses. 
2. A. micranthum Stapf in Kew Boll. (1894) 334. 
Habitat: III. Hadramaut: Near Dobaibah 4,000 ft. (Lunt 215); Shari 
Burrock valley, Mukalla 200 ft. (Lunt 48). 
Fl. : Feb. 1894 (Lunt). 
Distrib. : Endemic. 
3* A. Ob68aill Roem. & Schultz Syst. Veg. iv, 411 ; Defl. Yemen (1889) 163 ; 
0. Schumann Symb. Phys. Bot. (1900) 5. t. IV. — A. arboreum Ehrenb. ex Schum. 
1. c.— Nerium obesum Forsk. FI. Aeg.-Arab. (1775) CVII, n. 173 and p. 205. 
Habitat: II. W. Djara and Kara (ex Schum.) , Hille, J. Bnra (S. 291!) ; 
Chalife (S. 183 ! ) ; Milhan, Surd ad, Hadiyah (Forsk.) ; W. Bilad Lisan, plentiful, 
300-500 m. (Defl. 43); Wulej and Wasil (S.). 
Pl. : Dec. 1888 (S.). 
Fb.: Deo. 1888 (S.). 
Distrib. : Arabia, Tropical Africa. 
Vem. name : Aden, Oddaejn (Forsk.), Udein (ex Schum.). 
4. Adeainm sp. 
Habitat : II. W. el Neqil (Defl. 233!). 
Fl : Jan. 1890 (Defl.). 
Noti : Certainly a new species. Another pocimen of Dhofar Mts. coming very near. 
