1915] 



BESSEY — PHYLOGENETIC TAXONOMY 135 



Family 105. Callitrichaceae. Floating herbs with opposite 

 sessile leaves ; flowers diclinous, sessile in the leaf-axils ; peri- 

 anth none ; stamens 1 or 2 ; ovary 2-celled ; endosperm fleshy. 

 Callitriche. (Pf. 3 5 :120.) 



Order Guttiferales. Pistil mostly of 2 or more carpels, 

 2-several-celled, with axile placentae; stamens usually in- 

 definite; endosperm usually wanting. (Species. about 3138.) 



Family 106. Theaceae. Teas. Trees and shrubs usually 

 with alternate leaves ; inflorescence various ; petals imbricated ; 

 seeds few; endosperm scanty or 0. Thea, Stuartia. (Pf. 3 6 : 

 175.) 



Family 107. Cistaceae. Herbs and shrubs with opposite 



(or alternate) leaves; sepals 3-5; petals 5; stamens many; 



pistil 3-5-carpellary, with as many parietal placentae; seeds 

 usually many, endospermous. Cistus, Helianthemum, Hud- 

 sonia. (Pf. 3 8 :299.) 



Family 108. Guttiferaceae. Trees, shrubs, and rarely 

 herbs, with opposite or whorled, glandular-dotted leaves; in- 

 florescence often trichotomous, with flowers mostly diclinous ; 

 petals 2-6, or more, imbricated or contorted; stamens many; 

 carpels mostly 3-5; endosperm 0. Hypericum, Mammea, 

 Clusia, Garcinia. (Pf. 3° : 194.) 



Family 109. Eucryphiaceae. Evergreen trees of the south- 

 ern hemisphere, with opposite leaves ; flowers large, tetramer- 

 ous; stamens many; pistil many-celled; seeds endospermous. 

 Eucryphia. (Pf. 3 6 :129.) 



Family 110. Ochnaceae. Tropical shrubs and trees with 

 alternate, coriaceous, simple leaves; pistil lobed, 1-10-celled; 

 endosperm fleshy or 0. Ochna. (Pf. 3°: 131.) 



Family 111. Dipterocarpaceae. Tropical, resiniferous trees 

 and shrubs with alternate leaves ; inflorescence panicled ; flow- 

 ers regular, perfect ; petals contorted ; fruiting calyx enlarged, 

 and wing-like; carpels few (3-1) ; seeds 2 in each cell; endo- 

 sperm 0. Dipt ero car pus. (Pf. 3 6 :243.) 



Family 112. Caryocaraceae. Tropical trees and shrubs, 

 with alternate trifoliate leaves, large showy flowers, and many 



