416 



Flora of Aden. 



* 



secon 



interesting work lias now appeared. Part I., published last year, 

 is devoted to (1) a liistory of botanical exporation in Aden, (2) 

 pliysicaj aspects of tlie district, and (3) a general account of tlie 

 vegetation. Accompanying it is an excellent large scale map 

 and five reproductions of pliotograplis showing general views of 

 the town and harbour. The majority of collectors of Aden 

 plants have been travellers on their way to India or East Africa, 

 who were unable to spend more than a few hours at the port. 

 Continuous collecting by a resident during the whole year wouM 

 perhaps yield further 



Part li. contains the bulk of "the systematic account; it in- 

 cludes (1) a synopsis of the natural orders, which are arranged 

 from Jlariunculaceae to the end of UrUcaceae, after Bentham 



Genera Plantarum, and (2) descriptions of the 

 and species, with keys to the two last men- 



interesting results. 



and Hooke 

 families, 



genera 



tinned. We lear 

 wholly the work of the author, but have mostly been adapted 

 from botanical works dealing with neighbouring countries. The 

 number of ^indigenous species is 250, distributed under 138 



Monocotyledons. The largest 

 ineac with 33 species, Legnminosae has 32, Cap- 



f 



(7 



paridaceae 18, Euphorhiaceae 13, Boraginaccae and Cheno- 

 podiaceae 11 each, Componiac 10, Scroplulariaceae 9, whilst 

 most of the other families are represented by one or two species. 

 iNo less than 19 families claim only a single species, and Father 

 iilatter considers that this paucity is due to the excessive heat 



and drouffht which tend towards the entire extinction of 

 veo-etable Lfe. 



Father Blatter's publication is a valuable contribution to our 

 knowledge of the vegetation of Southern Arabia. 



T. II. 



15) :lTo%';r Adt X^'if tTl""' ^"^•'^' -^' -'-Nos. 1 and 2 (1914- 



