328 



TREES OF NORTH AMERICA 



Occasionally cultivated in the eastern states, and precariously hardy as far north 

 as eastern Massachusetts ; interesting as the most northern representative of the 

 Custard-apple family and its only species extending far beyond the tropics. 



2. ANONA, L. 



Trees or shrubs, with glandular often reticulated bark, terete branchlets marked 

 by conspicuous leaf-scars, and often pubescent during their first season. Leaves 

 coriaceous, often glandular-punctate, persistent or tardily deciduous. Flowers nod- 

 ding on bracted peduncles; calyx small, 3-lobed, green, deciduous; petals 6 in 2 

 series, valvate in the bud, hypogynous, sessile, ovate, concave, 3-angled at the apex, 

 thick and fleshy, white or yellow, the exterior alternate with the sepals, those of the 

 inner row opposite the sepals and often much smaller than those of the outer row; 

 stamens club-shaped, densely packed on the receptacle; filaments shorter than the 

 fleshy connective; anther-cells confluent; pistils sessile on the receptacle, free or 

 united; ovary 1-celled; style sessile or slightly stipitate, oblong; stigmatic on the 

 inner face, ovule 1, erect; raphe ventral. Fruit compound, many-celled, fleshy, 

 ovate or globose, many-seeded. Seeds ovate to elliptical; cotyledons appressed. 



Of the fifty species of Anona widely distributed in the tropics of the two worlds, 

 a single species reaches the coast of southern Florida. Of exotic species, Aiiona 

 muricata, L., the Soursop, and Anona reticulata, L., of the West Indies, and Anona 

 Cherimolia, Mill., of western tropical America, are now occasionally cultivated as 

 fruit-trees in Florida. 



Anona is the name given by early authors to the Soursop. 



1. Anona glabra, L. Pond Apple. 



Leaves oval or oblong, acute, tapering or rounded at the base, bright green on 

 the upper, paler on the lower surface, coriaceous, 3'-5' long, l^'-2' broad, with 

 prominent midribs; their stout petioles ^' long. Flowers nodding on short stout 



f-|G. ^62 



peduncles thickened at the ends, opening in April from an ovoid 3-angled bud; calyx 

 3-lobed, with broadly ovate acute divisions; petals connivent, acute, concave, pale 

 yellow or dirty white, those of the outer row marked on the inner surface near the 



