136 FAM. 166. 



flowers often dimorphous, solitary or in corymbose cymes; cor- 

 olla funnelform or salver-shaped, - Houstonia, Bluets 

 H. rotundifolia. Stem prostrate; leaves fleshy, oval to roundish, narrowed into 

 a short petiole; corolla white; numerous cleistogamous flowers. In pat- 

 ches, in damp soil. Early Spring. 



H. angustifolia. Stem much branched at the base; leaves linear, often clus- 

 tered; corolla white, very hairy inside. Sandy pine-barrens. Spring and 

 Summer. 



6. Flowers paired, with the ovaries united, on one axillary or terminal 

 peduncle; — evergreen herb with creeping stem; calyx 4-toothed; 

 corolla 4-lobed, funnelform; ovary 4-celled, stigmas 4; flowers 

 dimorphous; fruit of two 4-seeded druplets, crowned with the 

 persistent calyx, - - Mitchella, Twin-berry, Partridge-berry 



M. repens. Usually in patches; leaves ovate to roundish, petioled; flowers fra- 

 grant, white or pinkish; fruit red or white. Shady woodland. Spring. 

 6. Flowers in terminal, involucrate clusters; — pubescent; stipules fring- 

 ed; calyx 4-8 toothed; corolla 4-8 lobed; stigmas 3-4. 



Richardsonia, False Ipecac 

 R. scabra. Annual; leaves oblong to lanceolate, undulate, nearly sessile; in- 

 volucre of two unequal pairs of bracts; corolla funnelform, 6-lobed, white 

 or pink. Sandy soil. Summer. 

 R. Brasiliensis. Perennial; leaves elliptic to oblong, short petioled; flowers 

 as in preceding species, somewhat larger. Southward. 



166. Caprifoliaceae, Honeysuckle Family. 



Mainly trees and shrubs, the latter often twining, 

 with opposite, mostly exstipulate leaves; flowers clus- 

 tered, 3-5 parted; corolla tubular or rotate, the stamens 

 alternate with its lobes and adnate to its tube; ovary in- 

 ferior; fruit a berry or drupe. 



1. Corolla rotate, 5-lobed, -..------2 



1. Corolla tubular to long-campanulate, 2-lipped or 5-lobed, 3 



2. Leaves odd-pinnate; fruit a baccate drupe with 3-5 1-seeded stones — 



shrubs or small trees with chiefly 5-parted white flowers in um- 

 bel-like corymbose cymes; drupes deep purple. Low ground. 

 Early Summer. - Sambucus Canadensis, Elder 



2. Leaves simple; fruit a fleshy drupe with single stone;— shrubs or 



small trees with 5-parted white flowers in corymbose cymes. 



Viburnum, Haw, Sloe 

 V. nudum. Shrub, obscurely pubescent; leaves petioled; cymes shorter than 



the peduncles; drupes deep blue. Swampy ground. Spring and Summer. 

 V. obovatum. Shrub or slender tree, glabrous; leaves narrowed into a petiole; 



cymes sessile; drupe black. Swampy ground. Spring. 



3. Flowers in pairs on axillary peduncles, with 2 bracts and 2 bractlets; 



corolla 2-lipped, upper lip 4-lobed, lower lip narrow; — climb- 

 ing vine with short-petioled, oblong or ovate leaves; corolla 

 white, turning yellow, pubescent outside; berries black. Culti- 

 vated. - - Nintooa (Lonicera) Japonica, Japanese Honeysuckle 

 3. Flowers in whorls, sessile; corolla 2-lipped or with 5 nearly equal 



