DR. r. MUELLER ON DENNISONIA., T3A11KLYA, AKD LABOrClIERIA. 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 Scitaminea-, but from want of time I have made no 

 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 E. Brown. I have been much pleased to 

 find, even in the place itself, almost all the prophecies confirmed 

 which E. 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. Friedrich Welwitsch. 



Dennisonia, JBarkh/a, et Laboucheria ; genera florae Australise 

 nondum cognita. Descripsit Dr. Ferd. Mtjelleb, S.L.S,, etc. 

 [Eead Jan. 20, 1859.] 

 Denntsonia, n. g. 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 corollae inserta, emergentia. Antherce 

 biloculares inter loculos affixae, loculis ovatis divergentibus rima lon- 

 gitudinali hiantibus. Stylus filiformis apiee breviter bifidus, cruribus 

 acutis. Drupa exsucca nucamentacea, obovata, calyce inclusa, dipy- 

 rena, basi perforata, pyrenis bilocularibus arete cohaerentibus. Semina 

 in loculis solitaria, erecta, parce albuminosa. Radicula brevis infera. 

 Frutex Australiae borealis eoncinnus, glandulosus, pube ramosa articulata 

 vestitus ; foliis verticillato-ternis acute ovatis sessilibus serratis ; Jlori- 

 hus axillaribus solitariis bibracteolatis breviter pedunculatis, corolHs 

 roseis coccineo-venosis. 



