16. Guttiferae Calophyllum Inophyllum L. A low branching tree to 60 ft., rough gray bark; lvs. 3-8 in., long, leathery, nearly oval; flrs. white, 1 in. across in clusters of 4-15; 4 sepals; 4-8 stamens. Fruit round and green. 17. Hernandiaceae Hernandia ovigera L. A tall evergreen tree becoming butressed at the base; lvs. spirally arranged and the long petiole of each joins the blade well within the leaf margin; unisexual flrs., 2 male flrs. accompany each female flr.; fruit a black, oily nut. 18. Hydrophyllaceae A mat forming herb with a dia. of about 8 in.; lvs. alt., stemless and hairy about 0.33 in. long; flr. tubular, 5- lobed pinkish, 5 stamens. Name sandwichensis Gray. 19. Labiatae A. Creeping plant, hairy; flrs. small, red to purple; lvs. 0.5 to 1 in. ........ Stachys arvensis L. AA. Plant upright at tip of stems; flrs. white with purplish tint, 1 in. long ............ Phyllostegia verebilibis Bitter 20. Lauraceae Cassytha filiformis L. A parasitic vine with slender green, brown, yellow stems and branches. Lvs. are a few minute scales. Flrs. 6 parted with nine stamens; fruit fleshy, round about 0.25 in in dia.. 21. Leguminosae Flowers radially symmetrical, commonly small and massed in heads or spikes; trees and shrubs ............ Subfam. Mimosoideae I. Flowers bilaterally symmetrical, commonly medium to large-sized. Flowers with petals spreading, nearly equal; trees and shrubs ............ Subfam. Caesalpinioideae II. Flowers resembling the sweetpea: one large upper petal, two parallel side petals, two lower petals joined, shrubs and trees but mostly herbs ............ Subfam. Papilionatae III. I. A. Lvs. twice divided; pods opening by two valves when ripe, straight or curved B. Large thornless trees C. Flrs. in small round heads or cylindrical spikes with short stems ............ Acacia BB. Shrubs or small trees D. Flr. heads globular or cylindrical E. Stamens 10 in ea. flr. .... Leucaena L. glauca (L.) Benth. FF. More than 10 in ea. flr.