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(Last Modified On 8/8/2013)
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(Last Modified On 8/8/2013)
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Genus
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Kohleria Regel
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PlaceOfPublication
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Ind. Sem. Hort. Bot. Turic. [4]. 1847.
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Note
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TYPE: K. hirsuta (Kunth) Regel.
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Synonym
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soloma Benth. ex Decne., Rev. Hort. 20 [ser. 3, 2]: 465. Decemner, 1848, not Isoloma J. Smith, 1841. TYPE: 1. hirsutum (Kunth) Regel = Kohleria hirsuta (Kunth) Regel. Tydaea Decne., Rev. Hort. 20 [ser. 3, 2]: 468. December, 1848. TYPE: T. picta (Bentb. ex Hook. f.) Decne. = Kohleria bogotensis (Nichols.) Fritsch. Giesleria Regel, Flora 32: 181. 1849. TYPE: Achimenes picta Benth. ex Hook. f. = Kohleria bogotensis (Nichols.) Fritsch. Sciadocalyx Regel, Gartenflora 2: 257. 1853. TYPE: S. warszewiczii Regel = Kohleria warszewiczii (Regel) Hanst. Brachyloma Hanst., Linnaea 26: 203. 1854, not Brachyloma Sonder, 1845. TYPE: B. hirsutum (Kunth) Hanst. = Kohleria hirsuta (Kunth) Regel. Calycostemma Hanst., Linnaea 29: 506. 1859. TYPE: C. lindenii Hanst. = Kohleria lindenii (Hanst.) Hanst. Cryptoloma Hanst., Linnaea 29: 506. 1859. LECTOTYPE: C. hondensis (Kunth) Regel - Kohleria hondensis (Kunth) Regel.
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Description
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Terrestrial herbs, subshrubs, or shrubs from scaly rhizomes; stems usually erect or decumbent, terete, green to reddish brown, hirsute with multicellular hairs. Leaves opposite or in whorls of 3-4, those of a pair nearly equal to un- equal, pilose or hirsute, the blades thickened, ovate, lanceolate, or elliptic, serrate or crenate, dark green above, light green to purplish below, the lateral veins 6-9 arching toward the apex; petioles short or long. Inflorescences with flowers solitary, fasciculate to umbellate, usually numerous in the upper leaf axils, often appearing racemose or spicate with reduced leaves; peduncles often short with long pedicels, green or reddish, hirsute. Flowers protandrous, somewhat zygo- morphic, 1-4 per peduncle; floral tube turbinate to globose, hirsute; calyx lobes thick, erect to recurved, equalling or longer than the floral tube, pubescent on both the surfaces; corolla of 5 petals connate into a tube, erect or oblique in the calyx, the limb 5-lobed, bilabiate or regular, usually spotted or striped, the tube usually ventricose at the middle or toward the throat, or campanulate above a narrow base, red hirsute outside, sparsely pubescent inside; fertile stamens 4, adnate to the base of the corolla tube, the anthers at first coherent, later often becoming free, thecae distinct, dehiscent by longitudinal slits, a staminode usually present; disc lobate or of 5 glands, free or with 2 united; ovary more than / inferior, the style pubescent, the stigma bilobed, the ovules numerous on both the surfaces of the placental lamellae. Fruit a dry capsule dehiscing into 2 valves, the apex conic or rostrate; seeds numerous, fusiform, striate, dark brown.
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Habit
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herbs, subshrubs, or shrubs
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Distribution
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Kohleria is a genus with many species that ranges from Mexico to South America.
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Note
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The genus is widely cultivated for its colorful flowers. Numerous hybrids and cultivars are available in the horticultural trade. Three species are known from Panama, Kohleria spicata, K. tubiflora, and K. allenii. The first two are common, but the third is rare in Panama.
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Reference
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Moore, H. E. 1953. Comments on some Kohlerias cultivated in the United States. Baileya 1: 89-101. Morton, C. V. 1967. The Genus Kohleria in Mexico [Gesneriaceae]. Baileya 15: 61-78. Morton, C. V. 1967. A new Kohleria from Costa Rica in cultivation [Gesneriaceae]. Baileya 15: 79-81. Williams, L. 0. 1968. A beautiful Costa Rican Kohleria. Notes Roy. Bot. Gard. Edinburgh 28(3): 291-292.
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Key
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a. Cauline leaves 3 to 4 at a node; corolla limb diameter broader than the widest part of the tube, lobes spreading or reflexed. b. Corolla yellow with red hairs on outside, tube campanulate, 2.5-3.0 cm long, ca. 1.5 cm wide, all lobes equally spreading ...... 1. K. allenii bb. Corolla deep red to orange red outside, tube cylindric, not campanulate, 1.2-2.0 cm long, ca. 1 cm wide, upper and lateral lobes spreading, basal lobe reflexed ...... 2. K. spicata aa. Cauline leaves 2 at a node; corolla limb diameter less than widest part of the tube, lobes erect ...... 3. K. tubiflora
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