ERICACEAE. (HEATH FAMILY.) 309 



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

 Sand-hills of Burt Luke, Mich. (E. J. Hill). 



2. C. aparinoides, Pursh. (MARSH BELLFLOWER.) Stem simple and 

 slender-, weak (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 calyx triangular, half the 

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

 grounds, throughout our range. With somewhat the habit of a Galium. 



3. C. divaricata, Michx. Very smooth; stem loosely branched (1 -3 

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

 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 upwardly curved, much longer than the rotate corolla ; 

 openings of the capsule close to the summit; inflorescence 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, thin, somewhat hairy (2-J - 6' long) ; spike 1-2 

 long; corolla light blue, 1' broad. Moist rich soil, western N. Y. to Minn., 

 south to Ga. and Ark. 



ORDER 58. ERICACEAE. (HEATH FAMILY.) 



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

 as many or twice as many as the 4 - 5-lobed or 4 - 5-petalled corolla, free 

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

 ing by 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; Vacciniese. (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. 



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

 with 10 small seed-like nutlets. 



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



seeded. Anther-cells tapering upward into a tube. 



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



into a tube, but each 2-pointed. Slender trailing evergreen. 



SUBORDER II. Ericineae. (HEATH FAMILY proper.) Calyx free 

 from the ovary. Corolla gamopetalous, rarely polypetalous, hypogynous. 

 Shrubs or small trees. 



Tribe I. ARBUTE^. Fruit indehiscent, a berry or drupe. Corolla deciduous. 

 4. Arctostaphylos. Corolla urn-shaped. Drupe berry-like, 5 - 10-seeded. 



