Itea Gronov. ex L.

Genus

Angiosperms > Saxifragales > Iteaceae

Characteristics

Shrubs or trees. Leaves alternate, petiolate; stipules deciduous or evergreen, small, pinnately veined; leaf blade simple, elliptic to lanceolate, secondary veins spreading or curved, margin glandular dentate or spinose dentate, rarely crenate or entire. Inflorescence terminal or axillary, a raceme or racemose panicle, many flowered. Flowers bisexual or also unisexual, small. Calyx tube adnate to base of ovary; lobes 5, persistent. Petals 5, perigynous, erect or reflexed at anthesis, white or yellowish green, valvate. Stamens 5, inserted at margin of disc; filaments filiform-subulate; anthers ovoid to oblong. Disc ringlike. Ovary superior or semi-inferior, attached to disc, 2-carpellate, long ellipsoid; placentation central; ovules numerous, 2-seriate. Style simple or sometimes divided to middle, striate; stigma capitate. Fruit a capsule, conical to linear-oblong, apex cleft, with persistent calyx lobes and petals. Seeds numerous and narrowly fusiform or few and flattened oblong; seed coat glossy; embryo cylindric, large.
More
Hypanthium small, broadly cupulate; sep 5, small, erect; pet 5, narrowly oblong; stamens 5; filaments pubescent; ovary superior, bilocular, longitudinally 2-grooved, hairy; style grooved; stigma capitate; fr an indurate capsule, at first 2-grooved, tipped with the persistent style, eventually septicidal to the summit of the style; shrubs with chambered pith, superposed axillary buds, pinnately veined, serrulate lvs and slender, terminal racemes of small white fls. 20, e. U.S., e. Asia, w. Malaysia.
Shrubs without bristles and spines. Leaves: stipules minute, subulate; blade elliptic or obovate, surfaces glabrous or glabrate abaxially, glabrous adaxially, pinnately veined. Inflorescences: bracts subtending pedicels caducous. Flowers: hypanthium cup-shaped; sepals green; petals white; styles connate and grooved at anthesis, distinct in fruit. Capsules 2-locular, longitudinally 2-grooved. x = 11.
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Growth form shrub
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Foliage retention evergreen
Sexuality hermaphrodite
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Hardiness (USDA) 4-9

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