90 NYSSACEAE. 



leaf -blades elliptic to elliptic-obovate, 5-15 em. long: sepals lanceolate, about 

 10 mm. long: petals pale yellow, linear or nearly so: fruits 2-3 cm. long, the 

 radicle becoming several dm. long. MANGROVE. 



Coasts of s. pen. Fla., and on the shores of creeks and rivers to the limit of salt 

 or brackish water, and on the F. Keys. (W. I.) 



Order AMMIALES. 



Herbs, shrubs, trees, or vines. Leaves alternate or opposite: blades 

 simple or compound. Flowers perfect, polygamous, or dioecious, often 

 borne in umbels. Calyx of typically 5 small sepals surmounting the 

 hypanthium. Corolla typically of 5 petals, or wanting. Androecium of 

 as many stamens as the sepals. Gynoecium 2-carpellary or rarely several- 

 1-carpellary. Ovary inferior. Fruit drupaceous or baccate, or dry and 

 then a cremocarp. 



Style single : leaves opposite. 'Fam. 1. NYSSACEAH. 



Styles several : leaves alternate. Fam. 2. HEDEHACBAB. 



FAMILY 1. NYSSACEAE. DOGWOOD FAMILY. 



Shrubs or trees, or rarely partly herbaceous plants. Leaves opposite 

 or alternate: blades usually entire. Flowers perfect or unisexual, borne 

 in naked or involucrate open or congested cymes. Calyx of mostly 4 or 5 

 sepals. Corolla of 4 or 5, or rarely more, petals, or wanting. Androecium 

 of usually as many stamens as the sepals. Gynoecium of 1 or of 2-4 

 united carpels. Styles united. Fruit mostly a drupe. 



Flowers in open cymes, not subtended by an involucre : fruit sur- 

 mounted by the style. 1. SVIDA. 



Flowers in a head subtended by a large involucre : fruit surmounted 



by the calyx. 2. CYNOXYLO.V. 



1. SVIDA Opiz. Shrubs or trees. Leaves opposite or rarely alternate. 

 Flowers in naked corymb-like cymes. Sepals 4, minute. Petals 4, white, 

 spreading. Stamens 4. Drupe globular or depressed. Spr. CORNEL. 



Leaves glabrous. 1. 8. stricta. 

 Leaves pubescent. 



Drupes about 4 mm. in diameter ; stone longer than wide. 2. S. microcarpa. 



Drupes 6-8 mm. in diameter ; stone wider than long. 3. 8. Amomum. 



1. S. stricta (Lam.) Small. Shrub, or small tree with smoothish bark: leaf- 

 blades elliptic, oval, or ovate, 4-12 cm. long: petals linear-oblong to linear- 

 lanceolate: drupes 5-6 mm. in diameter, pale-blue. 



Swamps, n. Fla. and adj. pen. (Cont.) 



2. S. microcarpa (Nash) Small. Shrub with brownish twigs: leaf -blades oval 

 or elliptic, 3-9 cm. long: petals ovate-lanceolate to oblong-lanceolate: drupes 

 about 4 mm. in diameter, light-blue. 



Low woods, n. Fla. (Go.) 



3. S. Amomum (Mill.) Small. Shrub with purple twigs: leaf -blades lanceolate 

 to broadly ovate, 3-13 cm. long: drupes 6-8 mm. in diameter, pale-blue. 



Banks of streams, n. Fla. (Cont.) 



2. CYNOXTTLON Eaf. Trees. Leaves opposite. Flowers perfect, borne 

 in involucrate heads. Sepals 4, broadly ovate to oblong. Petals 4, greenish 

 or yellow-green, recurving. Stamens 4. Drupe elongate. DOGWOOD. 



