PHANEROGAMS— PROFESSOR BAYLEY BALFOUR. 179 



3. HELIOTKOPIUM. 



Hcliotraphim, Linn. Gen. n. 179 ; Benth. et Hook. Gen. PI. ii. 843. 



A large genus of herbs or shrubby plants ranging through the warmer and 

 temperate regions of the world. Of the nine Socotran species, three are 

 endemic, four are plants confined to tropical Africa and south-west Asia, the 

 remaining two, whilst essentially tropical African and south Asiatic species, 

 reach also to Australia. 



1. H. (Catimas) zeylanicum, Lamk. Illustr. i. 393; Clarke in Hook. 

 Flor. Brit. Ind. iv. 148 ; Wight Ic. t. 892. 



H. hirtum, Heyne in herb. Bottler. 



H. curassavicum, var. zeylanicum, Burm. Flor. Ind. 41, t. 16. f. 2. 



H. fruticosum, Forsk. Fl. iEgypt. Arab. 38.? 



H. suoulatum, Hochst. in kerb. Kotsch. Nub. n. 163. 



Tournefortia subulata, Hochst. in herb. Schimp. Arab. sect. ii. n. 1285; DC. Prod. ix. 528; 



Ach. Rich. Tent. Flor. Abyss, ii. 83. 

 T. zeylanica, Wight Illustr. t. 170. 



Soeotra. On the Haghier hills. B.C.S. n. 534. Schweinf. nn. 499, 682 

 in lit. 



Distrib. India, Scindh, Arabia, and tropical Africa. 



Like other Heliotropes this species varies much in clothing. Our specimens 

 from Soeotra are very hispid; those of Schweinfurth are much less so. 



2. H. (Monimantha) dentatum, Balf. fil. in Proc. Koy. Soc. Edin. xii. 

 (1883), 81. Tab. LIV, A. 



Aunuum ramulis a collo patentibus ; foliis linearibus v. lineari-lanceolatis dentatis hispidis 

 inflorescentiis laxe ramosis paucifloris ; corolke tubo calyce longiore ; styli lobis non 

 exsertis ; nucibus glabris. 



Herba parva a collo raultiramosa ramis hispidis patentibus adscendentibus in inflorescentias 

 tenues ramosas deliquescentibus. Folia angusta oblanceolata v. lineari-lanceolata v. 

 liuearia apice obtusa ssepe leviter expansa basi gradatim in petiolum tenuem attenuata, 

 basalia 2\ poll, longa £ poll, lata, superiora multo minora, hispida margine deutata. 

 Inflorescentia laxe ramosa basi bracteata, ramis gracilibus plerumque extra-axillaribus basi 

 non floriferis apice pauci (saepe l-2)-fioris, floribus sessilibus v. breviter pedicellatis 

 scorpioideo-dispositis plerumque ebracteatis. Calyx -^ poll, longus fere ad basim partitus, 

 segmentis lineari-lanceolatis extus hirsutis. Corolla} albae limbus induplicatus 5-fidus, 

 lobis elliptico-rotundatis obtusis obscure crenulatis, tubo \ poll, longo intus glabro extus 

 strigoso-pubescente. Stamina medio tubo affixa ; antherse ad orem corollini tubi 

 attingentes ovatse apice vix appendiculatte. Ovarium glabrum ; styli parte inferiore 54 

 poll, longa, sxiperiore longiore infra conica et apice in ramulos duos filiformes puberulos 

 fissa non exserta. Fructus in nuculas 4 glabras tuberculatas solvens. 



Soeotra. On the plains about Galonsir, Tamarida, and elsewhere. 

 B.C.S. n. 40. Schweinf. nn. 781, 789. 

 Distrib. Endemic. 

 An interesting species on account of its deeply bifid style. This is not a 



