﻿Trees of New York State 365 



sepals and petals generally of the same color, imbricated in the bud, hypogy- 

 nous, deciduous ; stamens numerous, imbricated, inserted on the elongated 

 receptacle; pistils numerous, similarly arranged, inserted above the stamens. 

 Fruit an aggregate head of 1-2-seeded follicles or samaras forming a naked, 

 cone-like structure, the axis marked below by the scars of the deciduous sta- 

 mens and perianth-lobes. 



KEY TO THE GENERA page 



1. Leaves entire or auriculate at the base; anthers introrse ; carpels fleshy at 



maturity, dehiscent, persistent Magnolia 365 



1. Leaves 4-^5 lobed; anthers extrose; carpels drj"^ at maturity, indehiscent, 



deciduous Liriodendron 365 



THE MAGNOLIAS. Genus MAGNOLIA L. 

 Trees or shrubs with smooth or scaly bark, branchlets encircled 

 by stipular scars, stipular membranous bud scales, and showy ter- 

 minal flowers. The genus includes some twenty species, natives 

 of eastern North America, Mexico and Asia. Seven species are 

 indigenous to the eastern states, two of which occur in New York 

 State. 



Leaves alternate, deciduous or persistent, simple, entire or auriculate at 

 the base, often minutely punctate. Flowers perfect, hypogj-nous, terminal, 

 sho'.vy, appearing before or after the leaves; sepals 3, spreading or reflexed; 

 petals G-12, concave, erect or spreading, arranged in series of 3 ; stamens 

 numerous, ^\dth short filaments aad linear anthers, early deciduous; pistils 

 numerous, inserted above the stamens on the receptacle, consisting of a 

 1-celled, 2-ovuled, sessile ovary and a short recui-ved style. Fruit an aggre- 

 gate, scarlet or rusty-brown cone consisting of coalesced, drupaceous, per- 

 sistent follicles which dehisce at maturity on the dorsal suture; seeds scarlet, 

 drupe-like, compressed, albuminous, suspended from the follicles by thin cords 

 of uncoiled spiral vessels. 



KEY TO THE SPECIES page 



L Leaves oval or broadly lanceolate, thick, subpersistent, 4-6 inches long 



M. virginiana 217 



1. Leaves ovate to oblong-oval, thin, deciduous, 4-10 inches long 



M. acuminata 219 



THE TULIP TREES. Genus LIRIODENDRON L. 



Trees with deeply furrowed brown bark, branchlets encircled 

 by stipular scars, stipular membranous bud-scales, lobed truncate 

 leaves, and a strobilus of samaroids. The genus includes but two 

 species, one widely distributed in the eastern United States, the 

 other in central China. 



Leaves alternate, deciduous, simple trimeate, heart-shaped or somewhat 

 cuncate at the base, truncate at the apex by a broad shallow sinus, sinuately 

 4- (rarely G-) lobed. Flowers perfect, hypogynous, terminal, showy, appearing 

 after the leaves; sepals 3, greenish white, concave, erect or spreading, early 

 deciduous; petals 6 in 2 series, erect, early deciduous; stamens numerous, 

 with filiform filament and linear, 2-cened anthers; pistils numerous, inserted 



