ORDER 17. CISTACE^E. 245 



of England. It is well characterized by its long, trailing, leafy runners. The Ivs. 

 are truly heart-shaped. Stip. lanceolate, toothed. Fed. longer than the leaves, 

 bracted. Fls. small, fragrant. Several garden varieties are known, and distin- 

 guished by the form and color of the flowers; viz: the purple, white and blue- 

 flowered, the double white, double purple and double blue-flowered, and the 

 Neapolitan with palo blue flowers. Apr., May.f 



2. SOLEA, Gingins. GREEN VIOLET. (Dedicated to W. Sole, an 

 English writer on plants.) Sepals nearly equal, not auriculate ; petals 

 unequal, the lowest 2-lobed and gibbous at base, the rest emarginate ; 

 stamens cohering, the lowest 2 bearing a gland above the middle ; 



capsule surrounded at base by the concave torus ; seeds G 8, very 



large. ^ An erect, leafy plant, with inconspicuous axillary flowers. 

 S. concolor Gingins. GREEN VIOLET. Woods, "Western 1ST. Y. to Mo., and S. to 



Car. Stem 1 2f high, simple, and, with the leaves, somewhat hairy. Lvs. 



4 6' by 1J- 2^', lanceolate, acuminate, subentire, tapering to short petioles. 



Pod. very short, 1 5-flowered, axillary. Fls. small, greenish, white. Cal. about 



as long as the corolla Lower petal twice larger than the others. Capsule near 



1' in length. Apr., May. 



ORDER XVII. CISTACEJE. ROCK ROSES. 



Herbs or low shrubs with simple, entire, opposite (at least the lower) leaves, with 

 fls. perfect, regular, hypogynous, in one-sided racemes, very fugacious. Sep. 5, un- 

 equal, persistent. Petals 5 (sometimes 3 or wanting) convolute in aestivation. Sta. 

 mostly OO. Caps. 1-celled, 3 5-valved, with as many parietal placcr.tco. Seeds 

 albuminous. Embryo curved or spiral. (Illust. in Fig. 404.) 



Genera 7, species 185, most abundant in S. Europe and N. Africa. 



GENERA. 



T Petals 3, linear-lanceolate, small LECHEA. 1 



1 Petals 5, largo and showy, or wanting HELIANTHEMUM. 2 



minute. Delicate shrubs HUDSOXIA. 8 



1. LECHEA, L. PIN WEED. (In memory of John Lcche, a Swedish 



botanist.) Sepals, 5, the 2 outer minute ; petals 3, lanceolate, small ; 



stamens 3 to 12 ; stigmas 3, scarcely distinct ; capsule 3-celled, 3-valved; 



placenta) nearly as broad as the valves, roundish, each 1 2-seeded. 



H Often shrubby at base, with numerous very small brownish purple 



flowers. 



1 L. major MX. Hairy; Ivs. elliptical, mucronulate ; fls. minute, about as long 

 as the pedicels. In dry woods, U. S. and Can. St. 1 2f high, rigid, brittle 

 hairy, purple, somewhat corymbously branched. Lvs. of the stem about 4" 

 long, alternate, opposite, or even verticillate on the prostrate branches, crowded. 

 Pis. brownish-purple, inconspicuous among the numerous bracts. Caps, round- 

 ish, about the size of a small pin-head. Variable. Jl., Aug. 



2 L. minor Lam. Smoothfeh; Ivs. linear, very acute; fls. small, on pedicel which 

 are mostly twice longer. Grows in dry, sandy grounds, U. S. and Can. Sts. 

 8 1G' high, slender, red, paniculately branched, often decumbent at base. Stem 

 Ivs. 6 10'' by 1", alternate, revolute at the margin, those of the divergent^ fili- 

 form branches gradually minute. Fls. twice as largo as in L. major. Petals 

 brownish-purple, cohering at apex. Caps, the size of a large pin-head. Jn. Sept. 



3 L. thymifolia Ph. Shrubby, hoary with oppressed hairs ; Ivs. linear and linear- 

 oblanceolate, rather acute, often verticillate ; fls. small, on pedicels still shorter. 

 Seacoasts, Mass to N. J. Sts. about If high, many from the same caudex, rigid 

 and very bushy. Lvs. 6 10" long, erect, crowded. Fls. in terminal, denso 

 cymules, on very short pedicels. Petals brown. Caps, globons. Jl. Sept. 



