WELWITSCHII ITER ANGOLENSE. 327 
remarkable insight into the vegetation of western tropical Africa, and 
from a personal inspection of these materials, we can but endorse the 
flattering opinions which Professor Fenzl, of Vienna, M. Alph. de Can- 
dolle, of Geneva, and Dr. Hooker, of Kew, have expressed of Dr. Wel- 
witsch's labours and their results.—Eprron.] 
I, EUPHORBIACEJE NOV A CL. DR. WELWITSCH IN AFRICA 
JEQUINOCTIALI OCCIDENTALI LECTJE, AUCTORE DR. J, 
MUELLER (MUELL. ARG.) 
1. Briedelia Angolensis, Welw. in Sched.; foliis ovatis v. oblongo- 
ovatis breve acutatis basi subcordatis coriaceis subtus valde prominen- 
ter reticulato-venosis, costis secundariis utroque latere 12—15 infimis 
dense approximatis, ramulis florigeris microphyllinis, floribus dense 
glomeratis glabratis, petalis masc. obovato-spathulatis 3-lobis. Arbor 
minor. In Angola (Welw. It. Angol.n. 367).—Subsimilis B. sclero- 
neure, Müll. Arg. in Flore Ratisb. 1864, p. 489. 
2. Briedelia elegans ; foliis obovato-lanceolatis basi acutis membra- 
naceo-coriaceis crenulatis subtus valde prominenter reticulato-venosis, 
costis secundariis utroque latere circ. 10-14, floribus in axillis foliorum 
glomeratis, calycis tubo puberulo laciniis glabris nitidulis, petalis masc. 
rhombeo-obovatis basi cuneatis superne angulosis. Frutex. In Ben- 
guela (Welw. It. Angol. n. 361).— Flores fom. et fructus ignoti. 
3. Briedelia speciosa; foliis breve petiolatis oblongato-ovatis breve 
euspidato-acuminatis virentibus non prominenter reticulato-venosis, 
costis secundariis utroque latere 8-12, stipulis lineari-lanceolatis, 
floribus fasciculato-glomeratis foem. sessilibus, petalis mase. exiguis 
3-lobis foem. e basi cuneata oblongo-obovatis subintegris parvis, urceolo 
perigyno elongato intus subsericeo, baccis oblongo-ellipsoideis. 
— a, trichoclada; ramulis petiolis stipulis et calycibus breviter 
villoso-tomentosis, foliis glabris. Arbor 25-pedalis et altior. In Ben- 
guela (Welw. It. Angol. n. 371).—Altera varietas, 8. psilociada, ramulis 
cum floribus et foliis glabris, a cl. Mann (n. 1215) in monte Cameroon 
i est. 
4. Briedelia PRESS foliis lanceolato-ellipticis v. elliptico-obo- 
vatove-lanceolatis acute acuminatis abopiegria membranaceis tenuiter 
retienlato.venosia obseuris, flexuosis debilibus, costis 
secundariis utroque latere cire. 15-20 tenuibus, floribus dense fascicu- 
latis numerosis, calycis utriusque sexus laciniis triangulari-lanceolatis 
Z2 
