80 TAXONOMY OF VASCULAR PLANTS [BoT. Absts., Vol. VII, 



& Engl., Damaraland; H. Wilsmii Engl., Natal; H. hantamensis Engl., Little Namaqualand; 

 H. coccocarpoides Engl., Transvaal; H. collina Schltr., Little Namaqualand; H. Meyeri 

 Engl., Little Namaqualand; H. leucantha Schltr., Little Namaqualand; H. Vetteri Engl., 

 North Hereroland; H. linnaeopsis Dint. & Engel., Damaraland; H. chloroleuca Diels, north- 

 west Cape Colony; H. Medleyi Engl., Natal; H. Dieterlenii Engl., Highland of southeast 

 Africa; H. Thodei Engl., Highland of southeast Africa. Besides the new species and varie- 

 ties of Hermannia, there are a few others as follows: Melhania Dinteri Engl., North Herero- 

 land; M. ferrugineoides Engl., North Hereroland; Cola subglaucescens Engl., South Kamerun; 

 C. edeensis Engl. & Krause, South Kamerun; and C. Tessmannii Engl. & Krause., forest 

 province of Guinea. — K. M. Wiegand. 



516. Engler, a. Guttiferae africanae. III. [Guttiferae of Africa. III.] Bot. Jahrb. 

 55: 381-396. 1919. — A contribution under the general heading "Beitrage zur Flora von 

 Afrika. XLVII, herausgegeben von A. Engler," continued from Bot. Jahrb. 45: 339. The 

 tropical African genus Psorospermum Spach is greatly in need of revision. In Oliver's 

 "Flora of Tropical Africa" only four species were described. Besides these, Schweinfurth 

 described one, and Engler three, and C. H. Wright one. In the present paper thirteen 

 new species and two new varieties are proposed as follows: P. Baumannii, Togo, and var. 

 Afzelianum, Sierra Leone; P. Baumii, Kunene-Kubango-Land; P. aurantiacum, Kamerun; 

 P. Staudtii, Kamerun; P. parviflorum, Kamerun; P. Kerstingii, Togo; P. laxiflorum, Togo; 

 P. densipunctatum, Kamerun; P, Mechowii, Angola; P. adamauense, Soudan Park-steppe 

 Province; P. Ledermannii, Soudan Park-steppe Province, and var. Doeringii, Togo; P. 

 glaucum, Soudan Park-steppe Province; P. suffruticosum, Soudan Park-steppe Province. 

 Other new species described are as follows: Haronga scandens, Kamerun; Garcinia Living- 

 stonii T. And. var. pallidinervia, Kondeland; G. Stolzii, north Nyassaland; G. ifl)angensis, 

 Soudan Park-steppe Prov.; G. Chevalieri, French Guinea; G. viridiflava, Kamerun; G. benien- 

 sis, Lower Prov. of Cent. Africa; G. mbulwe, North Nyssaland; G. arbuscula, Kamerun; 

 G. quadrangula, Kamerun; G. tibatensis, Soudan Park-steppe Prov.; G. tenuipes, Kamerun; 

 G. tschapensis, Soudan Park-steppe Prov. ; G. Danckelmanniana, Soudan Park-Steppe Prov. ; 

 G. ndongensis, Kamerun; G. nitidula, Kamerun; G. Buchneri, Angola; Pentadesma Ker- 

 stingii, Soudan Park-steppe Province, and Guinea forest Province. — K. M. Wiegand. 



517. Engler, A. Violaceae africanae. IV. Zur Kenntnis der afrikanischen Hybanthus- 

 Arten. [Violaceae of Africa. IV. Toward a knowledge of the African species of Hybanthus.] 

 Bot. Jahrb. 55: 397-400. 1919. — A contribution under the general heading "Beitrage zur 

 Plora von Afrika, XLVII." A key to the African species is given, and nine species are 

 listed. The new species, combinations, and varieties are: H. enneaspermus (L) F. v. 

 Muell. var. serratus, Transvaal; H. densifolius, southwest Africa; H. Hildcbrondtii, North 

 Somaliland; H. hirtus {Jonidium hirtum KlotzSch); H. hirtus var. Klotzschii, Mozambique, 

 Zanzibar; H. hirtus var. glabrescens, Somaliland, Zanzibar, Mozambique, Katanga; H. 

 Fritzscheanus, Huilla; H. caffer {Jonidium caff rum Sond.); H. caffer var. angustifolius ; H. 

 nyassensis {Jonidium nyassense Engl.); H. capensis {Jonidium capense Roem. & Schult.); 

 H. thymifolius {Jonidium thymifolium Presl). — K. M. Wiegand. 



518. FtJCHS, Alfred. Orchis Traunsteineri Saut. Erster Tell. Ber. Naturw. Vereins 

 Schwaben u. Neuburg 42: 3-174. 47 fig. 1919. — The author gives a full account of Orchis 

 Traunsteineri, a member of the Dactylorchis group occurring in Central Europe. He divides 

 this species, as ordinarily understood, into two species, the true 0. Traunsteineri of Sauter 

 and 0. pseudo-Traunsteineri, which he describes as new. Under the second species he dis- 

 tinquishes and describes in detail the following new subspecies: bavaricus, suevicus, gabre- 

 tanus, gennachiensis , Hoeppneri, eifliacus and Koningweenianus . To these subspecies he 

 ascribes a hybrid origin, regarding them as more or less complex crosses between O. Traun- 

 steineri and certain other members of the Dactylorchis group, such as O. incarnatus L. and 

 O. latifolius L. The subspecies suevicus, for example, he expresses by the formula, {Orchis 

 incarnatus + latifolius) + Orchis Traunsteineri; some of his other formulas are even more 

 complicated. In the course of his discussions h'e describes the following new races: 0. incar- 



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