DR. F, MUELLER ON DENNISONIA, BARKLYA, AND LABOUCHERIA. 157 
the collection of insects I have made in Africa (among which the 
Coleoptera especially are very numerous, and also the Hymeno- 
ptera not unfrequent), I have communicated to Mr. S. Stevens 
some general remarks. With regard to the wishes of Mr. D. 
Hanbury, I may remark that I have collected about eighteen 
species of Scitaminee; but from want of time I have made по 
drawings of their flowers, for I am a very bad and slow draughts- 
man: however, most of the species are very tolerably preserved, 
even as regards the flowers and fruit. Pray remember me kindly 
to Sir W. Hooker and R. Brown. I have been much pleased to 
find, even in the place itself, almost all the prophecies confirmed 
which Е. Brown pronounced in his celebrated Appendix to 
Tuckey's Travels: this appendix was my gospel. It is very true, 
that I could have worked more effectually during my long stay in 
equinoctial Africa, if I had not had to fight again and again with 
fever, scurvy, and dysentery, which is in some degree but 
natural; for I had to penetrate the densest woods, to examine the 
deepest ravines, and to wander for miles slowly under a burning 
sun through marshy land, whilst common travellers are moved 
along, lying comfortably in hammocks, only on roads. (Sapienti 
sat !) 
With the assurance of my greatest esteem and gratitude, I 
remain your most obedient, 
Dr. FRriEDRICH WELWITSCH. 
Dennisonia, Barklya, et Laboucheria ; genera ors Australis 
nondum cognita. Descripsit Dr. Fg». MvELLER, 8.LS., etc. 
(Read Jan. 20, 1859.] 
DENNISONIA, п. 5. VERBENACEARUM. 
Calyx subcampanulatus, quinquefidus. Corolla bilabiata ; labio supero 
breviore bifido; labii inferi tripartiti lacinia media majore; tubo 
cylindraceo subincluso intus barbato. Stamina quatuor didynama, 
omnia fertilia, infra faucem corolle inserta, emergentia. Anthere 
biloculares inter loculos affixee, loculis ovatis divergentibus rima lon- 
gitudinali hiantibus. Stylus filiformis apice breviter bifidus, cruribus 
acutis. Drupa exsucca nucamentacea, obovata, calyce inclusa, dipy- 
rena, basi perforata, pyrenis bilocularibus arcte cohzrentibus. Semina 
in loculis solitaria, erecta, parce albuminosa. Radicula brevis infera. 
Frutex Australize borealis concinnus, glandulosus, pube ramosa articulata 
vestitus ; foliis verticillato-ternis acute ovatis sessilibus serratis ; flori- 
bus axillaribus solitariis bibracteolatis. breviter pedunculatis, corollis 
roseis coccineo-venosis. 
