Part 60 (1/2)

[*][*] _Stems ascending; leaves alternate; calyx coherent below with the capsule._

2. S. rivularis, L. (ALPINE BROOK-S.) Small, stems weak, 3--5-flowered; lower _leaves rounded, 3--5-lobed_, on slender petioles, the upper lanceolate; _petals white, ovate_.--Alpine region of the White Mts., to Lab. (Eu.)

3. S. aizodes, L. (YELLOW MOUNTAIN-S.) Low (3--5' high), in tufts, with few or several corymbose flowers; _leaves linear-lanceolate, entire, fleshy_, distantly spinulose-ciliate; _petals yellow, spotted with orange, oblong_.--N. Vt. to S. W. New York, N. Mich., and northward.

June. (Eu.)

4. S. tricuspidata, Retz. Stems tufted (4--8' high), naked above; flowers corymbose, _leaves oblong or spatulate, with 3 rigid sharp teeth_ at the summit; _petals obovate-oblong, yellow_.--Sh.o.r.e of L. Superior, and northward. (Eu.)

[*][*][*] _Leaves cl.u.s.tered at the root; scape many-flowered, erect, clammy-p.u.b.escent._

[+] _Petals all alike._

5. S. Aizon, Jacq. Scape 5--10' high; _leaves persistent, thick, spatulate, with white cartilaginous toothed margins_; calyx partly adherent; petals obovate, cream-color, often spotted at the base.--Moist rocks, Lab. to N. Vt., L. Superior, and northward. (Eu.)

6. S. Virginiensis, Michx. (EARLY S.) Low (4--9' high); _leaves obovate or oval-spatulate_, narrowed into a broad petiole, crenate-toothed, thickish; flowers in a cl.u.s.tered cyme, which is at length open and loosely panicled; lobes of the nearly free _calyx erect, not half the length of the oblong obtuse (white) petals_; follicles united merely at the base, divergent, purplish.--Exposed rocks and dry hillsides; N. Brunswick to Ga., and west to Minn., Ohio, and Tenn.; common, especially northward. April--June.

7. S. Pennsylvanica, L. (SWAMP S.) Large (1--2 high); _leaves oblanceolate, obscurely toothed_ (4--8' long), narrowed at base into a short and broad petiole; cymes in a large oblong panicle, at first cl.u.s.tered; lobes of the nearly free _calyx recurved, about the length of the linear-lanceolate (greenish) small petals; filaments awl-shaped_, follicles at length divergent.--Bogs, N. Eng. to Va., west to Minn. and Iowa.

8. S. ersa, Pursh. (LETTUCE S.) _Leaves oblong or oblanceolate, obtuse, sharply toothed_, tapering into a margined petiole (8--12' long); scape slender (1--3 high); panicle elongated, loosely flowered; pedicels slender; _calyx reflexed, entirely free, nearly as long as the oval obtuse (white) petals; filaments club-shaped_; follicles nearly separate, diverging, _narrow, pointed_, 2--3” long.--Cold mountain brooks, Penn. to Va. and N. C.

9. S. Forbesii, Vasey. Stem stout, 2--4 high; _leaves denticulate, oval to elongated oblong_ (4--8' long); _filaments filiform; follicles short, ovate_; otherwise as in the last.--Shaded cliffs, near Makanda, S. Ill.

(_Forbes_); E. Mo. (_Lettermann._)

[+][+] _Petals unequal, with claws, white, all or some of them with a pair of yellow spots near the base; leaves oblong, wedge-shaped or spatulate; calyx free and reflexed._

10. S. leucanthemiflia, Michx. Leaves coa.r.s.ely toothed or cut, tapering into a petiole; stems (5--18' high) bearing one or more leaves or leafy bracts and a loose, spreading corymbose or paniculate cyme; _petals_ lanceolate, the _3 larger ones with a heart-shaped base_ and a pair of spots, the 2 smaller with a tapering base and no spots.--Mts. of Va. to N. C. and Ga.

11. S. stellaris, L., var comsa, Willd. Leaves wedge-shaped, more or less toothed; scape (4--5' high) bearing a small contracted panicle, many or most of the flowers changed into little tufts of green leaves, _petals all lanceolate and tapering into the claw_.--Mt. Katahdin, Maine, north to Lab. and Greenland. (Eu.)

3. BOYKiNIA, Nutt.

Calyx-tube top-shaped, coherent with the 2-celled and 2-beaked capsule.

Stamens 5, as many as the deciduous petals, these mostly convolute in the bud. Otherwise as in Saxifraga.--Perennial herbs, with alternate palmately 5--7-lobed or cut petioled leaves, and white flowers in cymes.

(Dedicated to the late _Dr. Boykin_ of Georgia.)

1. B. aconitiflia, Nutt. Stem glandular (6--20' high); leaves deeply 5--7-lobed.--Mountains of southwestern Va. to Ga. and Tenn. July.

4. SULLIVaNTIA, Torr. & Gray.

Calyx bell-shaped, cohering below only with the base of the ovary, 5-cleft. Petals 5, oblanceolate, entire, acutish, withering-persistent.

Stamens 5, shorter than the petals. Capsule 2-celled, 2-beaked, many-seeded, opening between the beaks, the seeds wing-margined, imbricated upward.--A low and reclined-spreading perennial herb, with rounded and cut-toothed or slightly lobed smooth leaves, on slender petioles, and small white flowers in a branched loosely cymose panicle, raised on a nearly leafless slender stem (6--12' long). Peduncles and calyx glandular; pedicels recurved in fruit. (Dedicated to the distinguished bryologist who discovered our species.)

1. S. Ohinis, Torr. & Gray.--Limestone cliffs, Ohio to Ind., Iowa, and Minn. June.

5. TIAReLLA, L. FALSE MITRE-WORT.