NOTE ON COFFEA ENGLERI 197 



22. Morgan, A. P. : Myxomycetes of the Miami Valley, Ohio 

 (Journ. Cincinnati Soc. Nat. Hist. (1893), p. 1). 



23. : Myxomycetes of the Miami Valley (ibid. (1896), p. 73). 



24. Penzig, M. O. : Die Myxotnyeeten der Flora von Buifcenzorg 

 (Leiden. (1898), Flore de Buitenzorg, II.). 



25. Schinz, H. : Die Myxomyceten oder Schleimpilze der 

 Schweiz (Mitth. a. d. Bot. Mus. d. Univ. Zurich, no. 31 (1906)). 



NOTE ON COFFEA ENGLERI, &c. 



By K. Krause. 



On pp. 114-116 of this Journal Mr. Spencer Moore has given 

 some remarks on the memoir on Rubiacece from Tropical Africa 

 published by me in Engler's Botan. Jahrb. xxxix. pp. 516-576. In 

 this note he declares that Coffea Engleri, described and figured by 

 me (L c. pp. 546-547), is undoubtedly identical with Tricalysia 

 jasminiflora (Klotzsch) Benth. et Hook, f., a plant which Peters 

 was the first to collect near Sena, and which, more recently, was 

 observed by Miss Gibbs in the Matopos, close to the locality of 

 Coffea Engleri. For several reasons, however, I am unable to adopt 



this view. 



First, as for the number of ovules. I have again examined the 

 ovary ; notwithstanding the rather young state of the flowers, I 

 have ascertained that each of the two cells contains onlv one ovule 

 attached to the common septum. Therefore it seems impossible to 

 refer the plant to Tricalysia, a genus having always two or more 

 ovules in each cell. Moreover, in several other points of minor 

 importance our plant does not agree with the character of Tricalysia] 

 it differs in the length of the filaments, the form of the anthers, 

 the size of the flowers, the shape of the stipules, in addition to the 

 generic character of the number of ovules mentioned above. With 

 T. jasminiflora more especially, to which it was referred by Mr. 

 Spencer Moore, it has very little in common, as may be seen by 

 looking only superficially to the type of Peters, or by comparing 

 the diagnosis as published in the Flora of Tropical Africa. Coffea 

 Engleri differs from it by the mode of vegetation, being an erect 

 tree of about 9 ft., whereas T. jasminiflora represents a shrub only 

 5 ft. high, and, not rarely, of climbing habit. Further, the bark is 

 rough and dark brown in C. Engleri ; rather smooth and pale 

 brownish in T. jasminiflora. Other differences are to be found in 

 the shape, consistency, and indument of the leaves. 



More important still are the floral differences. The calyx of 

 C. Engleri is much shorter than that of T. jasminiflora, also quite 

 entire, not split to the base at two opposite lines ; the corolla-lobes 

 of C. Engleri are somewhat broader and much more obtuse than in 

 T. jasminiflora, where the light emargination of the apex is wanting; 

 the filaments of my species are very short, hardly perceptible, the 

 anthers oblong and obtusate at both ends, whereas the filaments of 



