354 THE FLORIST AND 



aurantiacas tubuloso-clavatse tubo infer ne valcle attenuate calycem 3-plo ex- 

 cedente, limbi reflexi lobis ovatis obtusiusculis ciliatis, genitalibns glaber- 

 rimis, staminum inclusorum filamentis edentulis. 

 OESTRUM REGELII, Planch. 



Habrothamnus aurantiacus, Kegel. Ind. Semin. Hort. Turic. 1850 col- 

 lect, p. 4, adnot. f, ex Walp. Annal. Bot. Syst. Ill, p. 176 (non Cestrum 

 aurantiacum, Llndl.) 



Mr. Dunal, the learned author of the monograph of the Solanese, in 

 De Candolle's Prodromus, recognizes in Habrothamnus only a sub-genus 

 of Cestrum. According to this idea, which seems rational to us, it would 

 be necessary to make of Habrothamnus aurantiacus, of Kegel, Cestrum 

 aurantiacum. But there has been for a long time in gardens a Cestrum 

 aurantiacum described by Dr. Lindley (in Bot. Register 1844, miscell. 65 

 and in 1845 t. 22. Flore des Serres t. 33), a plant entirely distinct from 

 that of which we now publish the figure : so, to avoid confusion, we think 

 we should assign to this last the name of Cestrum Regelii. 



Still little known and little distributed, this elegant species of flowers first 

 in the garden of Zurich, about 1850. Its origin is attributed to Guate- 

 mala, and it is probably to the care of some German collector, that it owes its 

 introduction to Europe. The color of its flowers will suffice to distinguish 

 from the other species of the section, Habrothamnus, and especially from 

 H. elegans, near which the appearance of its characters places it. It is 

 evidently a precious addition to our green house shrubs. J. E. P. 



In Flore des Serres. 



TREE VIOLETS, AND HOW TO GROW THEM. 



Humble as is the Violet beneath our feet, peering out from its own green 

 foliage, a few blades of grass, or the decaying remains of a by-gone year, 

 as we take our stroll in the woods and shady groves, enjoying the delight- 

 ful dawn of summer again, this little pet is a general favorite. Every 

 body knows its name and admires it. Not less so are the cultivated varie- 

 ties : a greenhouse can hardly be said to be well stocked without them. 

 Especially the "Tree," for there is no difficulty whatever, to have them in 

 flower from November till April. This ever blooming property is one of 

 its chief attractions, as none of the others bloom but once. There are 

 several different colors in cultivation in Great Britain ; we have grown blue, 

 rose, and white, the two latter are valuable for variety in color, though in- 

 ferior to the blue. We have only met with the blue in this country. Many 



