Pyrus. ROSACEyE. 471 



(1-li imli in diameter) gTPfinish-yellnw and snmewliat iranslufeiil when 

 ripe, firm, extremely aciil, ripe in September. — Crab-Aj)plf. Swrcf-scentcd 

 Crab-tree. 



J D - P. angustifolia (Ait.) : leaves lanecokite-oblong, often aeute at ilie base, 

 dentate-serrate or almost entire, t^labroiis, sliininn; above ; pedieel.s glabrous ; 

 stvies dislinet and glabrous ; fruit small. — Ait ! Kew. (ed. 1.) 2. j). 273 ,• IV/jts. 

 dendrol. t. 132 ; Ell. sk. 1. p. 559 ; Lindl. ! hot. rei{. I. 1207. P. coronaria, 

 Walt. ; Wamr. Amer. p. 161, t. 21, f. 47. Mains ani^uslifolia, Mirlix. ! I. c. 

 Pennsylvania ! to Georgia and Louisiana ! 3Iareli-3ray. — Resembles 

 the preceding; the fruit smaller, tec. 



■' — 3. P. rivularis {J)oug\.): leaves ovate, acute, undivided or often some- 

 what 3-Iobed, acutely serrate, j)ubescent, especially beneall; ; calyx and 

 pedicels tomentose, or at length oidy pube«-ent : styles (3-4) glabrous, united 

 below the middle ; fruit very small, ovoid-globose (not umbilicate at the 

 base?) ; the lobes of the calyx at length deciduous. — Dougl. ! in Hook. Jl. 

 Bor.-Am. 1. j). 303, t. 68. P. diversifolia, Bongard ! veg. Sitclia, I. c. 

 p. 133. 



Banks of streams, Oregon and N. W. Coast, Menzies .' Douglas ! Dr. 

 Scouler ! Nutlall ! Sitcha, Bongard ! April-May.— Tree 20-2.5 feet high. 

 Flowers rather large. Lobes of the calyx woolly wiihin, as in other species 

 of this section. Fruit red or yellow (scarcely as large as a cherry, and of a 

 pleasant flavor, ?\v.tt.), used as an article of food by the Chenook Indians- 

 The wood is verj^ hard, capable of receiving a high polish, and is employed 

 by the natives for making wedges. This species belongs to the section Ma- 

 lus, rather than to Toniiinaria. 



Pyrus Mains (the Apple) is occasiona'Iy found in hedge-rows and neglected 

 fields, but is scarcely naturalized in any part of the country. 

 Pyrus Michauxii (Bosc) is not a North American species. 



§ 2. Leaves simple : the midrib glandular along the upper side : cymes com- 

 pound : petals spreading, concave : styles (3-5) united at the base : pome 

 turbinate or globose : carpels (putamen) somewhat cartilaginous. — Ade.vo- 

 RACHis, DC. (Aronia, Pcrs. partly.) J 



' -4. P. arbutifolia (Linn, f.) : leaves obovate-oblong, obtuse, acute, or acu- 

 minate, crenately serrulate, attenuate into a short petiole, shining above, 

 veiny beneath; fruit pyriform, or nearly globose when ripe. — Linn./.! 

 suppl. p. 256 ; HooTc. ! I. c. 



4- a. erythrocarpa : caljx, peduncles, and lower surface of the leaves, at least 

 when young, tomentose; fruit dark red. — Hook:.' I. c. P. arbutifolia, DC. ! 

 I. c. ; Willd. ! spec. 2. p. 1012. P. floribunda, Lindl. bot. reg. t. 1006. 

 P. depressa, Lindl. in hort. trans.? Mespilus arbutifolia, Linn..' spec. 1. 

 p. 478; Michx. .' I.e. {a. erythrocarpa.) Aronia pjrifolia & arbutifolia, 

 Pers. syn. 1. p. 39. A. arbutifolia. Ell. sk. 1. p. 556; Spach ! suite Buff. 

 Crataegus pyrifolia. Lam. ex DC. 



j.^. melanocarpa : calyx, peduncles, and leaves glabrous or nearly so ; fruit 

 purplish-bliick. — Hook..' I.e. P. melanocarjja, Willd.! enum. 1. 525; 

 DC! I. c. P. grandifolia (&pubens?), Lindl. I. c, S^' bot. reg. t. 1154. 

 Mespilus arbutifolia /?. melanocarpa, Michx. ! I. c. Aronia melanocarpa, 

 Ell. I. c. A. arbutifolia /?. melanocarpa, Torr. ! Jl. 1. p. 470. A. glabres- 

 cens, 8pach ! I. c. 



In low thickets or on the borders of swamps, Canada ! from Newfound- 

 land ! and the Saskatchawan ! and throughout the Northern States ! to 



