472 ROSACEiE. Piiotinia. 



Georgia ! and Louisiana ! May-June. (March-April, in the Southern 

 States.) — A low much-branched shrub, producing a profusion of white flow- 

 ers, often with a tinge of purple, with purple or brownish anthers. Leaves 

 1—2 or sometimes 3 inches in length ; the serratures mucronate with an in- 

 curved callous or glandular point ; the midrib with a row of purplish glands 

 along the u))])er side. Styles villous at the base. Fruit about 3 lines in di- 

 ameter, turbinate when young, nearly globose and dark reddish-purple or 

 almost black when ripe, sweetish and astringent. — Many intermediate fomis 

 between these two varieties, as we confidently consider them, occur in 

 a wild state, and others are common in the European gardens. The glabrous 

 form is more common in the Northern States, or on mountains. — Choke- 

 berry. 



§ 3. Leaves pinnate or pinnately lohed : cymes compound : petals spreading : 

 styles (2-5) distinci : pome globose or turbinate : carpels {putamen) not 

 cartilaginous. — Sorbus, Linn. 



6. P. Americana (DC.) : leaves pinnately 13-15-foliolate, glabrous (pu- 

 bescent as well as the petiole when very young) ; leaflets oblong-lanceolate, 

 acuminate, sharply serrate with mucronate teeth ; cymes large, compound ; 

 fruit (bright red or scarlet) globose. — DC. ! prodr. 2. p. 637 ; Hook. ! I. c. 

 Sorbus Americana, Willd.! enum. 1. p. 520 ; Pursh,fl. 1. p. 341 ; Torr. ! 



fl. 1. p. 447. Sorbus aucuparia /?. Michx. .' fl. I. p. 290. 



0. microcarpa: fruit smaller. — P. microcarpa, DC. I.e. Sorbus micro- 

 carpa, Pursh, I. c. S. aucuparia a. Michx. I. c. 



Shady swamps or moist woods, Pennsylvania ! New York ! and New 

 England States I mostly in mountainous regions, to Labrador! Greenland? 

 Subarctic America, and the N. W. Coast ! P. On the high mountains of 

 Virginia and N. Carolina! On the Grandfather Mountain, Mr. Curtis! 

 May-June. — A large shrub or small tree. Flowers white. Styles 3-5. 

 Fruit moderately acid, turning to light bright red when fully ripe, remaining 

 on the tree during the winter. — Very nearly allied to the European P. aucu- 

 paria, and certainly not to be distinguished by the color of the fruit (which is 

 neither purple nor fulvous when fully ripe) : the more sharply serrate and 

 acuminate leaflets may not provdia constant distinction. It is a very orna- 

 mental tree, especially in winter, %n account of its large clusters of scarlet ber- 

 ries. — Mountain-Ash. .^ 



7. P. sambucifolia (Cham. & Sehlecht.) : leaves pinnately about 11-folio- 

 late ; leaflets ovate-lanceolate, sharply serrate, acuminate, hairy along the 

 midrib and margins, bearded at the fepex ; stipules \'illous ^\^th reddish hairs. 

 — Cham. (^- Sehlecht. ! in Linneea, 2. p. 36 ; Bongard, vcg. Sitcha, I. c. 



Sitcha, Bongard. — Young fruit ovate. Bongard also notices a smaller- 

 leaved variety. 



28. PHOTINIA. Lindl. in Lin. trans. 13. p. 103, <^- bot. reg. fol. 1956. 



Calyx 5-toothed. Petals reflexed. Ovary partly coherent with the calj'x- 

 tube (of 2 combined carpels), hairy, either completely or incompletely 2- 

 celled: styles 2, distinct or coherent, glabrous. Pericarp included in the 

 fleshy calyx. Testa cartilaginous. — Trees, with coriaceous and persistent 

 entire or serrate leaves. Flowers (white) in corymbose terminal panicles. 

 Fruit small. 



