710 



CCIX. RAFFLESIACE^:. 



Cytintu. 



Fart of ovary cut trans- 

 versely (mag.). 



Cytinnt. 



Raffleiia Arnoldi. 

 Seed (mag.). 



Raffleiia. 



Partial section of the 

 seed, showing the 

 undivided embryo 

 (R. Brown) (mag.). 



PARASITES on the roots and sometimes on the brandies of dicotyledonous plants. 

 PERIANTH monophyllous, regular. COROLLA 0, or rarely 4,-petalous (Apodantheae). 

 ANTHERS oo , 1- (rarely 2-3-) seriate (Apodanthese). OVARY \-celled, with several many- 

 ovuted placentas ; OVULES orthotropous, sometimes sub-anatropous. FRUIT indehiscent, 

 many-seeded. EMBRYO undivided, albuminous or not. 



TRIBE I. RAFFLESIErfJ. 



Flowers 5 or dioecious. Perianth 5-10-tid. aestivation imbricate (Rafflesia, 

 Sapria), or valvate (Bruymansia) ; anthers 1 -seriate, adnate under the dilated top of 

 a staminal column (synema), and opening by a single or double pore. Ovary with 

 confluent or distinct many-ovuled placentas. Pericarp semi-adherent or free, 

 fleshy. Seeds recurved, funicle dilated at the top. Embryo albuminous, axile, 

 shorter than the albumen. Parasites on the roots of Vines. Flower sub-sessile, 



bracts imbricate. 



GENERA. 



Rnfflesia. Sapria. Brugmansia. 



TRIBE II. HYDNOREM. 



Flowers . Perianth 3-fid, aestivation valvate. Stamens inserted on the 

 perianth-tube ; anthers numerous, dehiscence longitudinal, united into a 3-lobed 

 ring, of which each lobe is opposite to the perianth-segments. Ovary inferior; 

 stigma sessile, depressed, of 3 lobes formed by apposed lamellae, distinct to the cavity 

 of the ovary, where they become placentiferous ; placentas pendulous from the top 

 of the ovary, sub-cylindric or branching, everywhere covered by very numerous 

 orthotropous ovules. Fruit fleshy. Embryo globose in the axis of a cartilaginous 

 albumen, Parasitic on the rhizomes of Euphorbia in South Africa. 



GENUS. 

 Hydnora. 



TRIBE III. CYTINE&. 



Flowers diclinous. Perianth 4-8-fid, aestivation imbricate. J : Stamens double 

 the number of the calyx-lobes, united into one bundle ; anthers 1-seriate at the top 

 of the synema, with 2 apposed parallel ? cells, dehiscence longitudinal. ? : Ovary 

 inferior, 8-16 celled above, but 1 -celled below; placentas distinct, parietal, in 



