E UPHORBIA GEM. 1 5T 



ill si^ikes, simple or formed of glomerules, with bracts laterally 

 glandular at the base. — 12 genera. 



B. Biovulate Euphorbiacea'. 



VI. DiCHAPETALE^. — Flowers hermaphrodite or more rarely poly- 

 gamous, perianth double, regular or irregular, petals fi-ee or united in a 

 regular or irregular gamopetalous corolla. Stamens fertile, in number 

 fewer or equal to the petals, hypogynous, perigynous or epigynous. 

 Fruit incompletely dehiscent. Seeds exalbuminous. — 3 genera. 



VIT. — PHYLLANTHEyE. — Flowers uuisexual, perianth simple or re- 

 gular, petals free or Avanting, hypogynous or perigynous, stamens in 

 definite or indefinite numbers inserted in the centre of the flower 

 or round a central body (rudimentary gynseceum). Fruit dehiscent 

 or indéhiscent. Seeds with or without albumen. — 37 genera. 



VIII. Callitriche^. — Aquatic plants, flowers unisexual or more 

 rarely polygamous perianth (?) simple, 2-merous. Stamens 1-2. 

 Gynaeceum 2-carpellary, with ovary cells subdivided into two unio- 

 vulate compartments. Fruits separable into four diy, mouospermous 

 parts (demi-cells). Cells albuminous. — 1 genus. 



This family, so divided, has many affinities. They were formerly 

 especially sought amongst the apetalous groups, and there have 

 often been united to the Exiphorhiaceœ all the types formerly united 

 under the name of Urticaceœ. The Scepaceœ and the Jntidcsmece 

 above all have frequently been connected with the latter, without 

 doubt on account of their amentaceous inflorescence.' Now we know 

 well the slight value of this character, there only remains, it is 

 said, to distinguish the Euphorhiaccce from the Urticaceœ proper, 

 the simple styles of the latter, the absence of the aril in the seeds 

 and the diflerence of properties." The Artocarpeœ have often the 

 style divided, which indicates the primitive existence of many 

 carpellary leaves, only one of which is developed in its ovary ; 

 and their milky juice gives them properties analogous to the 

 Eiqihorbiaceœ ; but the inflorescence has usually a particular configu- 

 ration ; and an Artocarpus may always be recognised at fii-st sight 

 by the an-angement of its stipules in the form of a conical hood, 

 which envelopes all the extreme parts of the branches and leaves 



> Enw.. Gen. 287, Ord. 90 ; 288. ^ gee Wedd. Monogr. Urtic. 39. 



