Oedbb n.— CISTAOEA 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 tho loaves, 

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

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

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

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



2. SOLEA, Gingins. Green Violet. (Dedicated to W. Sole, an 

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

 unequal, the lowest 2-lobcd and gibbous at base, the rest cmarginato ; 

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

 capsule surrounded at base by the concave torus; seeds 6 — 8, very 

 large. — U An erect, leafy plant, with inconspicuous axillary flowers, 

 S. concolor Gingins. Green Violet. Woods, Western N. T. to Mo., and S. to 



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



i — G' by IJ — 2 J-', lanceolate, acuminate, subentire, tapering to short petioles. 



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



as long as the corolla Lower petal twica larger than the others. Cap.-,ulo near 



1' in length. Apr., May. 



Order XVII. CISTACE.^. Book Koses. 



Herbs or low shrubs with simple, entire, opposito (at least tho lower) leaves, with 

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

 equal, persistent. Petals 5 (sometimes 3 or wanting) convolute in a;3tivation. Sia. 

 mostly CO. Caps. 1-celled, 3— 5-valved, with as many parietal placeniC2. Seeda 

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

 Genera 7, speciev 1S5, most abundant in S. Enropo and N. Africa. 



GEKEIiA. 



^ Petals 3, linear-lanceolate, small Lkchea. 1 



^ I'etals 5, — largo and showy, or w.anting: Heliantiiemum. 9 



— minute. Delicato shrubs IIudsonia. 3 



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

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

 stamens 3 to 1 2 ; stigmas 3, scarcely distinct ; capsule 3-celled, 3-valved ; 

 placentas nearly as broad as the valves, roundish, each 1 — 2-sccded. — 

 1| Often shrubby at base, with numerous very small brow^nish purple 

 flowers. 



1 Ii. major Mx. Eairy; lvs. elliptical, mucronulaie; fls. minute, ahout 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 tho prostrate branchc!?, crowded. 

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

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



2 Ii. minor Lam. Smooihish; lvs. linear, very acute; fls. small, on pedicel which 

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

 g — -16' high, slender, red, paniculately branched, often decumbent at base. Stem 

 lvs. 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-hcad. Jn. — Sept 



3 L. tliymifolia Ph. Shrubby, hoairy with oppressed hairs ; lvs. linear and linear- 

 oilanceolate, 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. Lvg. 6 — 10" long, erect, crowded. Fls. in terminal, dense 

 cymulcs, on very short pedicels. Petals brown. Caps, globoua. Jl. — Sept 



