DICOTYLEDONS„ 151 



sepals 5, equal or nearly so ; petals 5, oblique ; stamens 

 numerous, distinct or united in sets ; styles 3-5, distinct or 

 united, ovary 1- or sometimes 3-5-celled. 



1. H. MACULATUM Walt. SroTTED St. rlonx's-wouT. Peren- 

 nial from a woody base; stem erect, branched above, 2-3 ft. high; 

 leaves oval, obtuse at the apex, clasping at the base, conspicuously 

 hlack-dotted; cymes large, many-flowered, pedicels short; sepals 

 lanceolate, acute ; petals twice the length of the se})als, black-dotted; 

 stamens numerous, in 3-5 sets ; styles 3, twice as long as the ovoid, 

 3-celled ovary. June-August. Dry pine barrens. 



2. H. MTTiLUM L. Dwarf St. Joun's-wort. Amiual ; stem 

 erect, -t-angled, branched above, 9-15 in. high; leaves oblong or 

 ovate, obtuse at the apex, clasping at the base, 5-nerved; cymes 

 many-flowered, bracted, branches slender ; sepals lanceolate, about 

 the length of the petals; stamens 6-15, distinct; styles separate; 

 capsule green, ovoid, l-celled. June-xVugust. Common on low 

 ground. 



III. SAROTHRA. 



Annual ; stem erect, branched above ; leaves opposite, lin- 

 ear or subulate ; flowers scattered on the branches, small, 

 short-pediceled or sessile ; sepals 5, regular ; petals 5 ; sta- 

 mens 5-10 ; styles 3, distinct, ovary l-celled ; seeds striate. 



S. GKXTiANOiDKs L. PiNK-WKKD. Stem witli nuuierous erect, 

 wiry l)i"anches, 9-1-S in. high; leaves minute, bract-like; flowers ses- 

 sile, yellow; sepals linear, half the length of the acute, purple cap- 

 sule. May- August. In old fields on sandy soil. 



81. CISTACEiE. rvOCK-KOSi: FAMILY. 



Low shrubs or herbs; leaves simple, alternate or opposite; 

 Howers solitary or clustered, regular, usually perfect ; sepals 

 5, the 2 outer ones snniller and bract-like, ])ersistent ; petals 

 5, rarely wanting ; stamens few or numerous, distinct, bypogy- 

 nous ; style 1, stigma entire or 3-lobed ; ovary l-celled, several- 

 seeded. 



