3G8 FLORA OF TEXAS. 



free, the filaments membranaceous, hairy, shorter than the 

 anthers; stigmas 3 ; capsule prismatic, 3-celled, opening by 

 3 hiteral valves. Low annuals. Flowers axillary; corolla 

 blue. 



S. PERFOLiATA, A. DO. Pubesccut ; stem angled, simple 

 or branched; leaves round-cordate, crenate, clasping, the 

 lowest narrowed at the base ; ^^oz^ers single or clustered, 

 sessile, the lower ones apetalous. Stem 1° high. 



69. HEATH FAMILY. Order, Ericace^. 



Shrifhs or small trees, rarely Jierhs, with undivided alter- 

 nate exstipulate leaves, and regular flowers; calyx 4-5- 

 parted ; corolla 4-5-parted or toothed, or 4-5-petalous, im- 

 bricated in the bud; stamens free from the corolla, and as 

 many or twice as many as its divisions; «?^^^er5 2-celled, 

 often variously awned, opening commonly by terminal 

 pores; style 1 ; stigma entire or 3-lobed; fruit 3-10-celled ; 

 seeds anatropous, attached to a central placenta; emlryo 

 small, in fleshy albumen. 



SYNOPSIS. 



Sub-order L Vacciniese. Calyx-tuhe adherent to 

 the ovary ; corolla superior ; anther -cells prolonged into a 

 slender tube ; fruit a berry. — Shruis; corolla monopetalous. 



Berry '^b-celled, orjiartially 8-10-ceUed by false partitions^ many-seeded. . Vaccinium. 



Sub-order IL Ericineae. Calyx free from the ovary. 

 Corolla hypogynous. Fruit a capsule. Shrub or tree. 



Tribe I. Andbomede^. Capsule loculicidally deJiiscent. 



* Anther-cells opening at (he apex ; corolla monopetalom. 



Calyx xalvate in the early bud. Capsule globular. Seeds pendulous. . Andromeda. 

 valvule in the bud. pyramidal. ascending.. OxYD'Emmv^. 



** AntJiers inverted in the bud, opening by terminal pores ; corolla 5-petalous. 



Stamens 10. Style Z-cleft. Capside Z-celled, 3-valved Clethr a. 



