358 CONTRIBUTIONS TO SOUTH AFRICAN ASCLEPIADOLOGY. 



_ lu collibus asperis prope llietvalley, alt. 5500 ped., Drrrje. 

 Wildscliutsberg, Dirqe. In collibus prope Bethlehem, in terra 

 Orange Free State, alt. 5100 ped., Jan. 1894, H. Bolus, No. 8116; 

 H. (jr. Flanaf/an. 



This is another of the very interesting plants which were recently 

 collected by Mr. H. Bolus and Mr. H. G. Flanagan during their trip 

 to the Mont aux Sources. It was originally discovered by J. F. 

 Drege, in the Wittebergen, at Kiet Valley, and the Wildschutsberg, 

 but had never been found again. The corona-scales are very dis- 

 tinct from those of all the other species of this section, and the 

 plant may well be regarded as one of the great number of forms 

 which prove that Xysmaluhium cannot be maintained as a genus 

 distinct from Asdcpias. It cannot even be placed as a distinct 

 section, as many of the forms formerly regarded as Xysmaluhia are 

 too closely allied to others of the true Gowphocarims to be far 

 removed from them. 



39. Asclepias Tysoniana Schltr., n. sp. Herba adscen- 

 dens, e basi ramosa c. 20 cm. alta; ramis subteretibus subvelutinis, 

 satis dense foliatis, foliis ovatis vel ovato-lanceolatis subacutis tenue 

 pilosulis, breviter petiolatis, 2-4-5 cm. longis, infra medium 1-1-5 

 cm. latis ; floribus in nmbella terminali multiflora, subcapitata, 

 pedunculo erecto folia excedente, pedicellis brevissimis pilosis ; 

 calycis segmentis ovato-lanceolatis acutis pilosis, vix 0*3 cm. longis ; 

 coroUse lobis erecto-patentibus rhomboideo-ovatis obtusis, extus 

 apicem versus sparsim pilosis, intus glabris, calycem dimidio 

 excedentibus ; coronfe foliolis carnosis, erectis, ovato-oblongis 

 obtusissimis, gynostegium vix excedentibus, intus apice conspicue 

 incrassatis ; antheris subquadratis, marginibus cartilagineis basi 

 truncata baud dilatatis, loculos subsupeiantibus, appendice hyalino 

 oblongo obtusissimo in stigma depresso, marginibus loculorum 

 breviter emarginatis ; polliniis oblique pyriformibus paulo compressis, 

 caudiculis iiliformibus divaricatis glandula oblonga obtusa basi 

 insertis. 



In clivis mentis Malowe (Griqualand orientalis), flor. Dec. 

 (1884), W. Tyson. Prope Kokstad (Griqualand orientalis), flor. 

 Dec. (1889), W. Hcujgarth (J. ili. Wood, No. 4184 in Herb. Schltr.). 



In the Herb. Norm. Aicst. Afr. (ed. H. Bolus et P. MacOwan), 

 I proposed for this plant the name Pachyacris capensis ; now, how- 

 ever, after having had ample opportunity of studying allied forms, 

 I feel satisfied that it cannot be generically distinguished from 

 Asclepias. In Enyl. Jahrh. I have therefore proposed to unite 

 all these plants under one section, which I call Pachyacris. Of 

 the species now published, the present one comes nearest to G. 

 aceratcoides Schltr. from the Transvaal, but is easily recognized by 

 the leaves and the subcapitate flower-heads. A. 'Tysoniana is 

 described to me as having yellow flowers, which have a very strong 

 agreeable scent. I have dedicated this species to its discoverer, 

 Mr. W. Tyson, who has greatly added to our knowledge of the 

 flora of East Griqualand. 



40. Eustegia macropetala Schltr., n. sp. Herba pusilla e basi 

 ramosa 7-10 cm. alta ; ramis erectis vel suberectis, glabrescentibus, 



