Tab. 5698. 



VEBNONIA (Stengelia) Calvoana 



Sigiwr Calvos Vernonia. 



Xat. Ord. Composite.— Syngenesia-^equalia. 



Gen. Char. Capitulum pluri- seu multiflorum, aequaliflorum. Involucrum 

 imbricatum, floribus brevius, squamis interioribus longioribus. Hecepta- 

 culum saepius nudum. Corolla reguiaris, 5-fida, ]obis suba?qualibus. Fila- 

 menta laevia. Achcenium basi callosum, disco epigyno magno. Pappus 

 saepius 2-3-serialis, serie interiore setiformi externam saepe paleaceam longe 

 superante. — Herbse frutices v. arbores. Folia sapissime alterna. Inflo- 

 rescentia varia. 



Subgenus Stengelia. Involucri squamae exteriores oblongse v. oblongo- 

 lanceolatae, in appendicem amplam latam dilatatse, bracteolis foliaceis 

 circumdatae. — Stengelia, C. H. Schultz, mm. 



Vernonia (Stengelia) Calvoana ; fruticosa, ramulis pubesceiiti-tomentosis, 

 foliis caulinis sessilibus obovato-lanceolatis acuminatis dentatis deorsum 

 longe attenuatis ssepe auriculato-2-lobis, corymbis amplis laxe ramosis, 

 ramulis elongatis, capitulis pedunculatis late hemisphaerico-campanu- 

 latis, involucri squamis externis linearibus lanceolatisve herbaceis, 

 intermediis 2-multiseriatis in laminam chartaceam obtusam dilatatis, 

 intimis minoribus erectis concavis, corollis violaceis, pappi setis multi- 

 seriatis compressis, achaenio glaberrimo, receptaculo amplo piano laevi. 



Stengelia Calvoana. Hook.f. in Journ. Linn. Soc. Lond. v. 7. p. 199. 



This magnificent composite plant was discovered on the 

 Cameroons mountains, in the Bight of Benin, by Gustav 

 Mann, whilst collecting for the Royal Gardens, Kew, at 

 elevations of from three to seven thousand feet, in December, 

 1861, and was by him introduced into our gardens, where it 

 first flowered in January, 1866. It was accompanied by 

 another and apparently equally handsome species, V. (Sten- 

 gelia) insignia, Hook, f, which differs remarkably in the 

 petiolate leaves, and which has not yet been introduced. The 

 name Calvoana was given in compliment to Signor Calvo, of 

 Fernando Po, who rendered Mr. Mann essential service in his 

 arduous journeys on the Cameroons mountains and river. 

 -MAiicii 1st, 1868. 



