446 ERICA LES. [Hypogynous Exogens. 



Alliance XXXIV. ERICALES.—Tnv Erical Alliance. 



T)i kGmsis.— Hypogynous Exogens, with dichlamydeous flowers, symmetrical in the ovary, 

 axile placental, definite stamens, and embryo inclosed in a large quantity of fleshy 

 albumen. 



The striking resemblance in interior structure between the seeds of Wintergreens, 

 Fir-rapes, Francoads, and Sundews is such as to render it improbable that they should 

 not be placed by nature in very close affinity ; and it is only the want of correspond- 

 ence in the number of the floral organs of the latter which has led to its being detained 

 on the borders of the neighbouring Berberal Alliance. 



Ericals join Berberals by way of Humiriads, which are very like Olacads, and they 

 evidently pass into Rutals through the assistance of Correa among Rueworts ; nor is 

 this a feeble indication of consanguinity. 



Among more distant affinities, one with Dilleniads is very remarkably established by 

 means of the curious genus Saurauja in that Order. 



Natural Orders of Ericals. 



Flowers polypetalous. Stamens all perfect, monadelphous. Anthers \ j g4> Humiriace.e. 



2rcelled, with a long membranous connective J 



Flowers monopetalous. Stamens all perfect, free. Seeds with «1 165 _ Epacridace^e. 



firm skin. Anthers l-celled, opening longitudinally .... J 

 Flowers half -monopetalous. Stamens all perfect, free. Seeds with 1 jg^ Pyrolace.£. 



a loose skin. Embryo at the base of the albumen J 



Flowers polypetalous. Stamens half-sterile and scale-like, f ree -\\Qj w Francoace^e. 



Seeds with a firm skin J 



Flowers half -monopetalous. Stamens all perfect, free. Seeds \^ 6 ^ Monotropacee. 



with a loose skin or wing. Embryo at the apex of the albumen j 

 Flowers monopetalous. Stamens all perfect, free. Seeds with a\^,g Ericaceae. 



firm or loose skin. Anthers 2-celled, opening by pores ... J" 



Dr. Klotzsch has published in the Linnceafor 1851, p. 10, anew arrangement of that part of 

 this alliance which answers to the Linnean name of Bicomes. For what concerns the genera 

 with an inferior ovary, the reader is referred to p. 758. He divides the alliance into the following 

 orders and suborders, the supposed new genera of which are added. 



Order I. Ericace.s. ,,.-,» v , 



II. Siphon andrace^e ; sub. ord. Arbute^:. Daphnidostaphyhs, At. ; Xerobotrys. «w 



sub. ord. ANDROMEDEyE. Meisteria, Zucc. ; jEgialea, Ki ■ 



TEmcchania, DC. 



III. MeNZIESIACEjE. 



IV. Rhodorace.e. 

 V. Clethrace^e. 

 VI. Epacride*. 

 VII. Hypopithie.e. 





