14 
HISTORY OF THE BOTANICAL 
know, besides, that none of the collectors whose plants formed the 
materials of Anderson's description, ever went beyond the isthmus which 
connects the peninsula with the continent. 
Alfred Courbon 1859-1860. — Dr. A-. Courbon accompanied the French 
exploring expedition to the Red Sea under the command of Captain 
Russel in the year 1859-60. Russel afforded the young scientist every 
facility in his power towards the exploration of the flora, and Courbon 
was able to collect, within a few months, 800 species in Abyssinia and on 
the coasts and islands of the Red Sea. At Aden he gathered '35 species, 
amongst them the South African Kissenia spatJiulata R. Br., which had 
not been reported from that locality by earlier botanists. 1 2 The botani- 
cal results of this expedition were published by Brogniart. * 
The specimens were presented to the c( Museum d' histoire naturelle ** 
of Paris. 
Wichura, 1860, — According to Krause, Wichura collected some 
plants at Aden in 1860, when accompanying the Prussian expedition to 
Eastern Asia. His specimens are in the Herbarium of Berlin. 3 
Oliver and Cleave, 1863. — There are a number of specimens in the 
Kew Herbarium, which were collected at Aden by u Oliver and Cleave " 
in January 1863. In spite of prolonged investigation we have not been 
able to gather any information regarding the bearers of these names. 
Zenker, 1868.' — All we know is that a certain Dr. Zenker collected a 
few plants at Aden in 1868. The specimens are preserved in the Her- 
barium of Berlin. 4 5 
J, M. Hildebrand!, 1873, 1873, 1875,— -Hildebrand t visited Aden in 
June 187 £, before starting on his journey to Somaliland, and apparently 
a second and third time in May 1873, and March 1875. According to 
Krause the plants collected by Hildebrandt belong to the Botanical 
Museum of Berlin. A set of duplicates is in the Herbarium of Kew, 
but, judging from the numerous references to Hildebrandt’s specimens in 
Krause's “ Beitrage, " it seems to be far from being complete. Hilde- 
brandt's plants were described by Vatke in the a Oesterr . Bot. Zeitschr.” 
and in “ Linnsea/' 6 
1 Anderson : Florula Adenensis, p. 42. 
2 Brogniart, A. -. Notice snr les res ul tats relatifs a la botanique obtenns par le docteur 
Alfred Courbon, pendant le cours d'une exploration de la me.r rouge execulee en 1859-60. 
In Bull. Soc. Bot de France, VII, 898-903. 
Courbon seems to have published a book under the title : “ Exploration de la mer rouge 
sous les ordres de Mr. Russel Capitaine de Vaisseau, 1859-60/' The book is not known to 
us, 
8 Krause 1. c. p., 8. 
4 Krause 1. c. p.» 8. 
5 Oesterr. Bot. Z. Vol. XXV— XXX,- Linnaea, YJ, XLIII. For details, vide bibliogra- 
phy* 
