Glands between the parcels ol filaments none. Styles 3-5, distinct or
more or less united, persistent. Capsule usually membranaceous, l-celled
with 3-5 parietal placentæ, or 3-5-celled by the placentae meeting in the axis.—
Herbaceous or shrubby plants. Flowers yellow, solitary or cymose at the
summit of the stem and branches.
§ 1. Stamens very numerous, polyadelphous: capsule 5- (rarely 6-7-)
celled ; the dilated placentae retroflexed into the middle o f the cells.
Perennial herbs: leaves ample: flowers very large.
• 1. H: pyramidatum (A it.): stem quadrangular and usually branching
above; leaves ovate-lanceolate or oblong-lanceolate, partly clasping, membranaceous,
minutely pellucid-punctate ; sepals ovate or oblong, acute, scarcely
one-third the length of the petals ; styles as long as the stamens, connate
below, at length distinct.—Aft Kew. (ed. 1.) 3. p. 103; Willd. sp. 3. p.
1444; Vent. Malmais. t. 118; DC. prodr. 1. p. 545. H. amplexicaiile,
Lam. diet. 4. p. 141. H. macrocarpon, Michx. fl. 2. p. 82. H. ascyroides,
Willd. 1. c.; Pursh, fl. 2. p. 374; Bigel. fl. Bost. p. 279 ; DC. 1. c.; Hook,
fl. Bor.-Am. 1. p. 109.
Banks of rivers, Canada ! to Pennsylvania ! west to Ohio. July.—:Stem
2-5 feet high, nearly terete below: branches erect, 4-angled; two of the
angles often much strongest. Leaves 2-5 inches long, acutish or sometimes
obtuse. Flowers 1J inch in diameter, few or solitary at the ends of the
branches, usually several in a leafy cyme at the summit of the stem; the
central flowers on short pedicels; the lateral peduncles often elongated and
1-flowered. Petals obliquely and rather narrowly obovate, sometimes 6.
Styles occasionally 6 or 7, recurved at the extremity : stigmas capitate. Capsule
ovoid-conical, an inch long. Seeds terete, slender, with a slightly winged
raphe—We are confident that there is but a single North American species
of this section, upon which the H. pyramidatum of Aiton must have
been founded : we therefore adopt the oldest name. We have not seen the
figure of Ventenat: the character u stylis hrevibus crassis,” Choisy, in DC.
is not applicable to our plant.
§ 2. Stamens very numerous, more or less polyadelphous: capsule 3-5-
celled by the meeting o f the placentae in the axis: placentae either distinct
or more or less cohering with each other, seminiferous posteriorly
(next the valves.), Perennial herbs or under-shrubs.
* Shrubby: capsule peniaca/rpellary.
2. H. Kalmianum (Linn.) : very much corymbosely branched; branches
quadrangular with 2 of the angles slightly winged; leaves crowded, linear-
sublanceolate; obtuse, a little narrowed toward the base ; cymes fastigiate,
3-7-flowered; sepals ovate-lanceolate, rather obtuse, about half the length of
the petals; styles connate at the base.— Willd. sp. 3. p. 1438; Pursh, fl. 2.
p. 374; Hook. fl. Bor.-Am. 1. p. 109.
Banks of rivers, Canada and around the Great Lakes ; Falls of Niagara,
Cooper ! &c. Fort Gratiot, Dr. Pitcher ! (Virginia, Kahn ex Linn.; but
Kalm’s specimens we suspect were collected in Canada.) August.—A shrub
l i feet high. Leaves an inch long, 2-3 lines wide, slightly glaucous, with
revolute margins. Petals obovate, very oblique. Styles hardly longer than
the ovary, very slender. Capsule ovate.—Apparently an exclusively northern
species.
* * Shrubby or suffrv/uticose : capsule tricarpellary.
3. H. prolificum (Linn.) : stem sparingly branched, the branches anci-
pital; leaves oblong-lanceolate, rather obtuse, narrowed at the base ; cymes
compound, leafy ; sepals foliaceous, unequal, ovate, with a short abrupt point,
one-third shorter than the obovate petals ; styles at first united, at length distinct
; capsule ovate-oblong.— Willd. sp. 3. p. 1453 ; Ell. sk. 2. p. 30; DC.
prodr. 1. p. 547. H. densiflorum, Pursh, fl. 2. p. 376.
fl. cymes few-flowered, terminal and axillary; axils of the leaves mostly
naked ; capsule ovate-conical, large.
y. 7 stem much branched; leaves much smaller and crowded, linear-ob-
long, fascicled in the axils; cymes compound; flowers much smaller; sepals
ovate-lanceolate; capsule oblong, attenuate at the summit.—H. galioides,
Pursh! fl. 2. p. 376. (excl. syn.)
Banks of rivers and swamps, New-Jersey! to Florida! (s. Ohio, Riddell!
y. New-Jersey! Texas, Dr. Veatch ! July-Aug.—Shrub 2-3 feet high.
Leaves 2-2J inches long, 4-6 lines wide (in r. 1- 1J inch long; the upper ones
often scarcely a line wide; revolute on the margin). Flowers as large as in
H. perforatum (except in y.). Petals very oblique. Capsule in /?. more than
half an inch long, nearly 3 times as large as in y. Torus conspicuous.
Seeds cylindrical, slightly curved.
4. H. adpressum (Barton) : stem 2-winged above; leaves linear-lanceolate
or linear-oblong, closely sessile,, pellucid-punctate (without black dots),
veined, with smaller ones fascicled in the axils ; cyme few-flowered, naked;
sepals very unequal, oblong and obovate, rather obtuse, at length reflexed;
petals twice as long as the sepals, oblong-obovate; styles united to the summit
; capsule ovate-oblong.—B a r t.! fl. Philad. 2. p. 15. H. Bonapartese,
Bart. ! fl. Am. Sept. 3. t.
Borders of swamps in the pine barrens of New-Jersey! Banks of the
Schuylkill near Philadelphia, Barton! Conrad! Arkansas, Nuttall ! Aug.-
Sept.—Stem about 2 feet high, somewhat shrubby at the base. Leaves 2
inches long, 3-4 lines wide, narrowed at the summit, and often also at the
base, the upper ones sometimes rather acute ; veins numerous, and appearing
translucent when the leaf is held to the light. Cymes compound. 15-20-
flowered. Flowers half as large as in H. perforatum ; the dichotomal ones
sessile. Stamens very numerous. Styles longer than the stamens, united
untd the fruit is nearly mature. Capsule rarely 4-celled. .Torus hemispherical,
very distinct. Seeds cylindrical.
5. II. rosmarinifolium (Lam.): stem suffrutescent, terete helow, somewhat
ancipital above, straight; branches few and erect; leaves linear, rather
obtuse, narrowed at the base, revolute on the margin ; cymes few-flowered
dense, terminal; sepals nearly equal, oblong, acute at each end; petals obo-
vate, rounded at the summit, with an obscure lateral tooth; style slightly
united; capsule broadly ovate; seeds cylindrical.—Lam. diet. 4. p. 159;
Willd. sp. 3. p. 1450, not of DC. prodr., nor of Ell.
Near Lexington, Kentucky, S h o rt! Tennessee, Cooper ! July-Aug.—
Stem about 2 feet high. Leaves 1J—2 inches long, 2 lines .wide, rather dis-
tant, with a few smaller ones in the axils. Flowers about half an inch in
diameter. Capsule scarcely 2 lines long.—The plant here described may
not be the original H. rosmarinifolium of Lamarck, whose descriptive character
is wholly insufficient.
6. II. galioides (Lam.): stem frutescent, terete; branches few and
straight, erect; leaves linear-lanceolate, fascicled in the axils as if verticil-
late, rather obtuse, narrowed into a petiole at the base, dotted with large pellucid
glands; cymules numerous, axillary and terminal on the paniculate
branches; sepals nearly equal, linear-lanceolate, at length reflexed; petals