the base often narrow: petioles 3-4 inches long, with a few scattered glandular
hairs. Bracts (small, foliaceous), peduncles, and short pedicels, as well
as the upper part of the stem, glandular-pubescent. Flowers smaller than
in S. Virginiensis, white. Ovary 2-celled ; the carpels united nearly to the
summit, free from the campanulate calyx except at the very base: styles
short: stigmas minute.—We have not seen the fruit of this interesting
plant, which its zealous discoverer obtained in flower only. It must doubtless
rank among the anomalous pentandrous species of Saxifraga, but it is
very different from any other described. It has manifest points of resemblance
to Heuchera; but the ovary is perfectly 2-celled, with a central
placenta; the petals conspicuous, &c.
S. petiolaris (R. Brown.)—This species is indicated, although we believe not
described, in Ross’ 1st voy. (ed. 2) 2. p. 192, a work which we regret is not at
present accessible to us. It is again mentioned in the supplement to Parry’s Voy.
age under S. hyperborea (which Hooker unites to S. rivularis), where it is said to
be distinguished from both these species “ by all the leaves being dotted with sub-
sessile glands, the radical ones equalling or exceeding the scape, the floral leaf
lobed; the petals 3-nerved.”—Dr. Richardson (appx. Frankl. journ. ed. 2. p. 14)
takes notice of a specimen collected on the Arctic sea-shore, which was thought to
belong to S. rivularis, but which he supposes may be the S. petiolaris, chiefly on
account of the tripli-nerved petals. Neither of these plants is, we believe, taken
up by Hooker.
S. nutans, Don (Saxifr. 1. c.p. 368), is Romanzovia Unalaschcensis! (v. sp. in
herb. Banks.)
S. androsacea, Linn., is given by Pursh as a native of the North West Coast,
on the authority of a specimen in the Banksian herbarium. The figure of Jacquin
being cited with a mark of doubt, and as Mr. Don does not notice the plant, it
belongs probably to some different species.
S. spathulata 0. ? arctica, Seringe (Antiphylla, Haw.) from Melville Island,
we are unable to identify.
3. BOYKINIA. Nutt, in jour. acad. Philad. 7. p. 113.
Calyx turbinate, at length urceolate, coherent with the ovary; the limb
spreading, 5-cleft; segments triangular, acute, valvate in aestivation. Petals
entire, longer than the lobes of the calyx, deciduous. Stamens 5, inserted in
the throat of the calyx, shorter than its segments : anthers 2-celled. Styles
2-3, short: stigmas simple. Capsule invested with the coherent urceolate
calyx-tube, 2-3-celled, with a central many-seeded placenta, 2-beaked, dehiscent
between the beaks. Seeds horizontal, ovoid, glabrous (minutely
marked with elevated dots under a strong lens).—Perennial herbs, with leafy
stems. Leaves alternate, palmately veined and lobed, incisely toothed ; the
teeth mucronate: petioles scarcely stipuliform at the base. Flowers small,
in corymbose cymes.
Intermediate between Saxifraga and Heuchera, as Nuttall remarks, but more
nearly allied to the former ; which has a few pentandrous species. The genus is
dedicated to Dr. Boykin, of Georgia; whose name frequently occurs as a contributor
to this work.
1. B. aconitifolia (Nutt.): glandular; leaves somewhat glabrous, dilated
and somewhat truncate at the base, deeply 5-7-lobed; cyme viscid, fastigi-
ate, the flowers secund; teeth of the calyx broadly triangular.—Nutt. ! 1. c.
Mountains of North Carolina, Mr. Kinn (in herb. Muhl..') Mr. Curtis !
June-July.—Stem rather stout, 1-2 feet high. Leaves somewhat like those
of Aconitum Napellus; the lower ones on long petioles; the uppermost
nearly sessile. Cyme many-flowered ; the branches somewhat racemose.
Calyx coherent nearly to the summit of the ovary; the limb at first spreading
; the teeth short, 3-nerved, somewhat acuminate. Petals (often none ?)
spatulate-obovate, sessile, longer than the calyx, white. Capsule mostly
2-celled : placenta thick, very many-seeded.
2. B. occidentalis: nearly glabrous; leaves roundish-cordate, incisely somewhat
5-lobed and toothed; cyme loose, pubescent and slightly glandular;
teeth of the calyx triangular-lanceolate.
Oregon, Douglas! (1835)—Stem very slender, 1-2 feet high. Lower
leaves l i inch in diameter, with very short lobes, on long slender petioles.
Cyme somewhat paniculate; the peduncles rather few-flowered. Petals
very caducous, white.—Saxifraga ranunculifolia is perhaps a third species of
this genus.
4. HEUCHERA. L in n .; Geertn. fr . t. 177; R. Br. in Richards, appx.
Frankl. journ. ed. 2. p . 52, t. 29.
Calyx campanulate, coherent with the ovary below, 5-cleft (sometimes
unequal); the segments obtuse, imbricate in «estivation. Petals 5, small,
entire. Stamens 5, inserted alternately with the petals into the throat of the
calyx: filaments exserted or included : anthers 2-celled. Styles 2. Capsule
1-celled, with 2 parietal adnate placentae, many-seeded, 2-beaked, dehiscent
between the beaks. Seeds horizontal, oval, minutely muricate or hispid.—
Perennial mostly acaulescent herbs. Radical leaves numerous, on long petioles,
palmately-veined, roundish-cordate, lobed and crenate or incised ; the
cauline ones, when present, alternate. Stipules adnate with the base of the
petiole, free at the apex. Scapes mostly panicled ; the peduncles cymosely
dichotomous, commonly glandular.
§ 1. Filaments and styles filiform, much exserted: calyx short, equal, olconic
or campanulate; the lobes spreading: petals mostly persistent, at length
often revolute or twisted: panicles effuse.—E uheuchera.
1. II. Americana (Linn.): scabrous-puberulent and somewhat viscid;
scape mostly naked; leaves roundish-cordate, somewhat 7-9-lobed; the
lobes very short and rounded, dentate-crenate with short and broad mucronate
teeth, ciliate ; panicle elongated, loose, many-flowered ; the pedicels
divaricate ; bracts linear or subulate ; petals spatulate, somewhat unequal,
about the length of the calyx-segments ; stamens (at first unequal) at length
much exserted; anthers orange-color— Linn. spec. 1. p. 226 ; Willd. !
spec. l .p . 1328 ; E ll.! sk. 1. p. 337 ; Torr. ! f l . l .p . 280; DC. ! prodr. 4.
p. 51 ; Darlingt. fl. Cest. p. 175. H. Cortusa, Michx. ! ft. 1. p. 171.
H. viscida, Pursh! fl. l .p . 187. H. glauca, Raf. med. flora, l .p . 244 ?
Woodlands and rocky places, Connecticut, Southern part of New York!
and Pennsylvania! to Alabama, and Missouri, Dr. James! May-June.__
Root astringent, as in all the other species. Leaves 1-4 inchesin width,
slightly hispid with appressed hairs above, pubescent on the veins beneath,
membranaceous: petioles elongated. Scape 2-4 feet high, rarely with one
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