INTRODUCTORY CHAPTER. 



liii 



List of endemic species in the phanerogamic flora of Socotra — continued. 



Asclepiade^: — continued. 

 Cochlanthus socotranus, Balf. fil., 

 Secamone socotrana, Balf. fil., . 



Vincetoxicum linifolium, Balf. fil., 



Marsdenia robusta, Balf. fil. 

 Boucerosia socotrana, Balf. fil., 



GeNTIANACEjE. 



110 Exaeum caeruleum, Balf. ill. 

 ,, affine, Balf . fil. , 



,, graoilipes, Balf. fil., . 



BORAGINEai. 



Cordia obovata, Balf. fil. , 



,, obtusa, Balf. fil. 

 Heliotropium dentatum, Balf. fil., 



,, odorum, Balf. fil. , 



, , nigricans, Balf. fil. 



Trichodesma Scotti, Balf. fil. ' 



, , microcalyx, Balf. fil. , 



120 ,, laxiflorum, Balf. fil. 



Cystistemon socotrannm, Balf. fil., 



CONVOLVULACE^i. 



Ipomoea laciniata, Balf. fil. 

 Convolvulus filipes, Balf. fil., . 



,, sarmentosus, Balf. fil. 



Porana obtusa, Balf. fil., 

 Breweria pedunculata, Balf. fil. 



,, glomerata, Balf. fil. 



,, fastigiata, Balf. fil., . 



SOLANACE^. 



Withania Riebeckii, Schweinf , 



SCROPHULARINE*. 



130 Camptoloma villosa, Balf. fil., 

 Campylanthus spinosus, Balf. fil., 



Graderia fruticosa, Balf. fil., 

 Xylocalyx asper, Balf. fil., 



ACANTHACE.E. 



Ruellia insignis, Balf fil. 

 „ carnea, Balf. fil. , 

 Blepharis spiculifolia, Balf. fil. , 

 Barleria aculeata, Balf. fil. 

 ,, tetracantba, Balf. fil., 

 ,, argentea, Balf. fil., 

 140 Neuracanthus aculeatus, Balf. fil. 

 , , capitatus, Balf. fil. , 



Ballochia amosna, Balf. fil., 



,, rotundifolia, Balf. fil., 

 ,, atrovirgata, Balf. fil., 

 Justicia rigida, Balf. fil., 



Remarks, Affinities, &c. 



Allied to south African and Madagascar genera. 



Related to Madagascar and Mascarene species. 

 ( Differs in its flagelliform branches and twining habit from old world 

 \ species. 



Allied to B. sinaica,T)cue. and B. Aucheriana, Dene., Arabian species. 



/Annual. Allied to E. petiolare, Griseb., a plant of the Indian 

 I Peninsula. 

 Annual. 



Allied to Cordia crenata, Del., a native probably of Arabia. 



J Annual. Allied to H. Ophioglossum Stocks from Scindh, Beloo- 

 \ chistan, and also Somali-land. 

 Allied to H. indicum, Linn., a widespread species. 



/ Allied to T. africanum., B. Br. , a tropical African and south-west 

 I Asian plant. 



Allied to Borago. 



Allied to C. chondrilloides, Boiss., a plant of south Persia. 

 Differs freely from type of genus. 



Differs markedly from generic type. 



A near ally of W. somnifera, Dunal, which also occurs on Socotra. 



Annual. Only one other species known ; it grows in south Africa. 



A small genus with sporadic distribution. 

 ( Only two other species in genus — one south African, the other 

 \ Angolan. 



Allied to south African and Madagascar genera. 



Perhaps near B. Curori, T. Anders. , a west tropical African species. 

 Differs slightly from generic type. 



J- Differ from generic type in ovarian characters. 

 [• Differ somewhat from generic type. 



J- Near the monotypic Cameroon genus Oreacanthus. 



Nearest J. incaria, T. Anders. , a south African species. 



