ERICACE.*:. ( HEATH FAMILY.) 309 



Var. velutina, DC, has the whole herbage canescently pubescent. — 

 Sand-hills of Hurt Lake, Mich. {E. J. IJill). 



2. C. aparinoides, Tuish. (Maush Bellflowkh.) Stetn simple and 

 slender, wcu/c (8-20' high), few-flowered, somewhat 3-angled, rough backward 

 on the angles, as are the slightly toothed edges and midrib of the linear-lanceolate 

 leaves; peduncles diverging, slender; lobes of the calgx triangular, half the 

 length of the bell-shaped nearly white corolla ; capsule erect. — Wot grassy 

 grounds, tlirougliuut our range. With soniewliat the habit of a Galium. 



3. C. divaricata, ^lichx. Very smooth; stem loosely branched (1-3° 

 high) ; leaves oblong-lanceolate, pointed at both ends, coarsely and sliarply 

 toothed ; Jlowers numerous on the branches of the large compound panicle; 

 calyx-lobes awl-shaped, about half the length of the pale-blue small corolla (3" 

 long) ; style exserted. — Dry woods and rocks, mountains of Va., E. Ky., and 

 southward. 



* * Style declined and upivardly curved, much longer than the rotate corolla ; 

 openings of the capsule close to the summit ; injiorescence spicate. 



4. C. Americana, L. (Tall Bellflower.) Annual; stem mostly 

 simple (3-6° high); leaves ovate and ovate-lanceolate, taper-pointed, serrate, 

 mostly on margined petioles, tliin, somewhat hairy (2^-6' long); spike 1-2° 

 long; corolla light blue, V broad. — Moist rich soil, western N. Y. to Minu., 

 south to Ga. and Ark. 



Order 58. ERICACE.^. (Heath Family.) 



Shrubs, sometimes herbs, with the flowers regular or necirhj so; stamens 

 as many or twice as many as the A-b-lobed or A-b-petalled corolla, free 

 from hut inserted with it : anthers 2-celled, commonly appendaged, or open- 

 ing hy terminal chinks or pores, introrse (except in Suborder 3) ; style 1 ; 

 ovary 3- 10-celled. Pollen compound, of 4 united grains (except in Sub- 

 order 4). Seeds small, anatropous. Embryo small, or sometimes minute, 

 in fleshy albumen. — A large family, very various in many of the charac- 

 ters, comprising four well-marked suborders, as follows : — 



Suborder I. Vacciniea;. (Whortleberry Family.) Calyx- 

 tube adherent to the ovary, which forms an edible berry or berry-like 

 fruit, crowned with the short calyx-teeth. Anther-cells opening at the 

 apex. — Shrubs or somewhat woody plants, with scaly buds. 



]. Gaylussacia. Ovary 10-celled, with a single ovule iu each cell. Fruit a berried drupe 

 with 10 small seed-like nutlets. 



2 Vaccinium. Berry 4 - 5-cellcd (or imperfectly 8 - 10-<elled by false partitions), many- 



seeded. Anther-cells tai)ering upward into a tube. 



3 Chionrenes. Berry 4-celled, many-seeded, its summit free. Anther-cells not prolonged 



into a tube, but each 2-pointetL Slender tj-ailing evergreen. 



Suborder II. EricineiT^. (Heath Family proper.) Calyx free 

 from the ovary. Corolla gamopetalous, rarely polypetalous, hypog}nous. 

 — Shrubs or small trees. 



Tribe I. AKBUTE.iE. Fruit indehiscent, a berry or drupe. Corolla deciduous. 

 4. Arctostaphylos. Corolla ui'n-shaped. Drupe berry-like, 5- 10-seedeU. 



