Obdeh 18.— PRIMULACE^E. 503 



3. ARDRQS'ACE, Tourn. (Gr. dvdpug, a man's, odnog, buckler or 

 shield ; from the form of the leaf.) Calyx 5-cleft or toothed ; corolla 

 funnel-form or salver-form, the 5 lobes entire, tube constricted at the 

 throat, ovate, shorter than the calyx; filaments and style very short; 

 capsule globous. — Minute caespitous herbs with radical, rosulate lvs. 

 A. occidentalis Ph. Lvs. obloug-spatulate and ovate, entire, glabrous; scapo 



solitary, or few, puberulent; bracts oval, pedicels slender; eal. angular, segm. 

 acute; cor. lobes long, obtuse. — (T) Gravelly shores of tho Mis3., 111. (Gray), and 

 Mo. (Natt) Scapes 1 to 3' high." 



4. DODECATH'EON, L. American Cowslip. Pride of Ohio. 

 (Gr. dudeica, twelve, Otot, gods ; alluding to its curious flowers which 

 are about 12.) Calyx 5-parted, reflexed ; cor. tube, very short, limb 

 rotate, 5-partd, segm. reflexed ; sta. 5, inserted into the throat of the 

 corol!a; fil. very short; anth. large, acute, connivent at apex; style cx- 

 serted ; caps, oblong-ovoid, 5-valved, manj r -seeded. — 2£ Root fibrous, 

 with radical, oblong lvs., an erect, simple scape, and a terminal umbel 

 of nodding white flowers and erect fruit. 



1 D. Meadia L. Lvs. oval or oblong, obtuse, attenuate at base into a marginal 

 petiole, glabrous, entire or repandly dentate ; scape 9 — 20 flowered ; bracts of 

 the in vol. ovate, inner ones lanceolate ; sep. lanceolate, acute, entire ; fil. united 

 into a tube much shorter than the subulate anthers. — A. singularly elegant herb, 

 on prairies, dry or rocky soils, Penn. to Ind., 111., Wise, and throughout tho 

 "Western States. Whole plant very smooth. Leaves all radical, 7 — 10' long, 

 often quito entire. Scapes 1 to 2f high. The nodding flowers with their wing- 

 like, reflexed petals and beak-liko anthers, exhibit a very unique appearance. 

 May, Jn. (Fig. 297, 394.) 



5. CYCLAMEN, L. (Gr. tcvi^Xog, a circle ; on account of the coiled 

 fruit stalks.) Calyx bell-shaped, 5-parted ; corolla tube ovate, short, 

 limb 5-parted, reflexed ; anthers 5, included, sessile ; capsule globous, 

 5-valved. — Oriental herbs. Rt. a large tuber. Lvs. all radical, ovate 

 or roundish, cordate. Scapes naked, erect, with one nodding flower, 

 but in fruit coiling up, and hiding the capsule in the ground. 



1 C. Europium L. Lvs. roundish-reniform, crenate; pet. lancc-ovate, obtuse. 

 — Lvs. purple beneath. Pis. roseate, fragrant, f Eur. 



2 C. Coum Mill. Lvs. reniform-orbicular, entire ; pet. ovate-orbicular, obtuse.— 

 Lvs. purple beneath. Pis. inodorous, purple, f Asia Minor. 



6. GLAUX, L. Black Saltwort. (Gr. yXavnog, bluish or glau- 

 cous ; from the hue of the plant.) Calyx campanulatc, 5-lobed, colored ; 

 corolla none ; stamens 5 ; capsule roundish, surrounded by the calyx, 

 5-valved, 5-seeded. — If. Maritime, branching, glabrous, with opposito 

 lvs. and small axillary, solitary fls. 



G. maritima L. A small, fleshy plant, found occasionally on the salt marshes 

 on the sea coast, Cam to N. J. Stem more or less procumbent at base, 4 to G' 

 high, smooth, branching and very leafy. Lvs. §' in length, roundish-ovate, ob- 

 tuse, entire, nearly or quito sessile, smooth, fleshy and darkly glaucous. Cal. 

 white, tinged with red. Jl. 



7. TRIENTA^LIS, L. Chickweed "Wintergreest. (Lat. triens, the 

 third part of a foot (4') ; alluding to the height of .the plant.) Calyx 

 and corolla 7 (G to 8)-parted, spreading; stamens 7 (6 to 8) ; fruit cap- 

 sular, somewhat fleshy, oo-seeded. — St. low, simple. Lvs. subverticib 

 late. Pedicel 1 -flowered. 



