Revisions of Some Plant Phyla 63 



Family 228. Rafflesiaceae. Fleshy, parasitic herbs, leafless or 

 nearly so; petals 4 or o; stamens 8 to many; pistil i -celled or im- 

 perfectly many-celled, inferior; ovnles minute, very numerous, 

 on parietal or pendulous, folded placentae. Rafflcsia, Cytimis. 

 (Pf. Ill, I, 274.) 



Family 229. Hydnoraceae. Parasitic, succulent, tropical herbs ; 

 perianth single, valvate ; stamens numerous ; seeds very numerous. 

 Hydnora. (Pf. Ill, i, 282.) 



Order Cactales. Flowers actinomorphic (regular) or nearly 

 so, perfect; pistil syncarpous, i-celled, with parietal placentae, its 

 ovary inferior; style divided at the apex; endosperm present or o; 

 embryo curved ; fleshy-stemmed, mostly leafless, plants. 



Family 230. Cactaceae. Cactuses. With the characters of the 

 order. Peireskia, Opuntia, Ccreus, Melocactus, Cactus, Rhip- 

 salis. (Pf. Ill, 6a, 156.) 



Order Loasales. Flowers usually actinomorphic (regular), 

 perfect or diclinous; pistil syncarpous, i-celled, its ovary usually 

 inferior ; placentae parietal ; styles free or connate ; leaves ample, 

 entire, lobed or dissected. 



Family 231. Loasaceae. Star Flowers. Herbs with opposite 

 or alternate leaves ;, flowers perfect ; sepals and petals dissimilar ; 

 stamens indefinite; ovary inferior; endosperm fleshy or o. Mcnt- 

 zelia, Loasa. ( Pf . Ill, 6a, 100.) 



Family 232. Cucurbitaceae. Melons. Mostly climbing or 

 prostrate herbs and undershrubs, with alternate leaves ; flowers 

 diclinous; stamens definite (usually 3); ovary inferior; endo- 

 sperm o. Melothria, M omordica, Luffa, Citrullus, Cucumis, 

 Lagenaria, Cncnrbita. (Pf. IV, 5, i.) 



Family 233. Begoniaceae. Begonias. Mostly herbs with al- 

 ternate leaves ; flowers diclinous ; stamens indefinite ; ovary in- 

 ferior, usually 3-angular ; endosperm little or o. Begonia. ( Pf . 

 Ill, 6a. 121.) 



Family 234. Datiscaceae. Herbs or trees, with alternate 

 leaves ; flowers mostly diclinous ; stamens 4 to many ; ovary in- 



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