470 ROSACEiE. Pyrus. 



scabrous above, not shining, scabrous-pubescent beneath; spines wanting ; 

 corymbs (in (iuit) 2-4-floweretl, tomcntose-])ubcscent; segments of the calvx 

 small, triangular-lanceolate, entire ; styles 2-4; fruit (immature) subglobose, 

 rather large. • 



Prairies of Opeloiisas, Louisiana, Prof. Carpenter ! — This species bears a 

 strong resemblance to C. parvifolia ; but the leaves are larger (particularly on 

 the young branches) and much more attenuate at the base ; the specimens are 

 thornless ; the corymbs often at least 4-ilowercd ; and the calyx-segments 

 are entire, not glandular, and not half the size of those of C. [)arvifolia. It 

 forms a tree from 20-25 feet high, according to Prof. Carpenter. We have 

 no flowers, and, although collected in July, the fruit is still unri})e. 



X Douhtful Species. 



17. C. unilateraLis (Pers.) : leaves cuneiform or oblanceolate, obtuse, 

 crenate, undivided, corymbs unilateral ; fruit urceolate. Pers. syn. 2. p. 37. 



Carolina, in herh. Lamarck, without flowers. Persoon. — It is impossible 

 to identify (his species. It is perhaps C. parviflora, or C. spathulata. 



C.;3rwneZZ(/b/za (Bosc), of which a specimen without fruit or flowers is in tho 

 herbarium of De Caiulolle, is iis likely to be a Pruiius as a Cralfegus. 

 C. hetcrophylla (Flugge) is not a North American plant. 



27. PYRUS. Linn. ; Lindl. in Lin. tratis. 13. p. 97. 



Pyrus &, Sorbus, Li7in. Pyrus, Malus, & Sorbus, Tourn. 



Calyx-tube urceolate ; the limb 5-lobed. Petals roundish. Styles 5, or 

 sometimes 2-3, distinct or often united at the base. Pome fleshy or baccate, 

 closed: carpels 2-5, cartilaginous or nearly membranaceous. Seeds 2 in 

 each cell : testa chartaceous or cartilaginous. — Trees or shrubs, with simple 

 or pinnate leaves. Flowers (white or rose-color) in spreading terminal sim- 

 ple or compound corymbose cymes. Fruit mostly eatable. 



The genus is more commonly retained in the form adopted by Lindley, 

 in his revision of the tribe. But it will probably be again divided, perhaps as 

 has been done by Koch. {Fl. Germ, et Helv.) 



§ 1. Leaves simple, not. glandular :_cijmes si7np)lc ; the pedicels mostly umbel- 

 late : petals spreading, flat : styles (3-5) united at the base : jwmc mostly glo- 

 bose or depressed, umbilicate at the base : carpels {jnitamen) cartilaginous. 

 — Malus, Tourn. {Ajjple.) 



1. P. coronaria (Linn.) : leaves ovate, on very slender petioles, obtuse or 

 subcordate at the base, incisely serrate, often lobed, glabrous when old ; pedi- 

 cels glabrous ; styles united and woollv at the base ; fruit small, fragrant. 

 —Linn. spec. 1. p. 480 ; Ait. ! I. c. ; Willd. ! spec. 2. p. 1019 ; DC. U. c. ; 

 Hook. ! bot. mag. t. 2009 ; Lindl. ! bot. res. t. 651. Malus coronaria, Mill, 

 diet. ; Michx. ! ft. 1. p. 292 ,• Michx.f. sylv. 2. p. 67, t. 65. 



Borders of woods, Michigan! (and" near Lake Superior, Dr. Pitcher .') 

 and western part of New York ! to Louisiana, and the upper districts of S. 

 Carolina and Georgia ! sometimes cultivated. April-May. — A small tree, 

 10-20 feet high. Corymb few-flowered : the flowers pale rose-color, very 

 large, fragrant: petals somewhat unguiculate. Fruit depressed-globose, 



