Taxon Details: Cavendishia sirensis Luteyn
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Family:
Ericaceae (Magnoliophyta)
Ericaceae (Magnoliophyta)
Scientific Name:
Cavendishia sirensis Luteyn
Cavendishia sirensis Luteyn
Primary Citation:
Brittonia 30: 426, figs. 1-4. 1978
Brittonia 30: 426, figs. 1-4. 1978
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Description: Lianoid shrub to 2 m tall or high-climbing epiphytic vine; stem terete or somewhat flattened, smooth, glaucous, glabrous; twigs similar to mature branches but with scattered, tiny, subspherical glands. Leaves oblong or oblong-elliptic, 8-17 x 3-6 cm, base obtuse, rounded, or subcordate, rarely truncate, apex abruptly long- or short-caudate-acuminate, short-pilose along nerves above, glabrous beneath, both surfaces with caducous glandular fimbriae; apparently 5-plinerved (in Ecuador) or pinnately nerved (in Peru) with 4-6 lateral nerves per side, midrib noticeably thickened and raised through proximal half otherwise impressed above and conspicuously raised beneath, lateral nerves impressed above and raised beneath, sometimes arching from midrib and anastomosing near margin to form a collective nerve, veinlets slightly raised on both surfaces; petiole terete or flattened on adaxial surface, slightly rugose, (4-)8-12 mm long, glabrous or puberulent. Inflorescence 13-19-flowered, somewhat fusiform in bud; rachis subterete, bluntly angled, 4-8.5 cm long and 2.5-3.5 mm diam., glabrous; floral bract oblong or oblanceolate, obtuse or rounded, 30-50 x 15-25 mm, glabrous, pink to deep red (fide label data); pedicel subterete, 7-8 mm long and 1-1.2 mm diam. at anthesis but later elongating to 15 mm, glabrous; bracteoles located near base, cucullate, oblong-lanceolate, 2-3.5 x ca. 1 mm, with a conspicuous midrib, glandular callose-thickened marginallly distal 1/3. Flowers with calyx glabrous, 7-9 mm long; hypanthium subcylindric, rugose, 2-3.5 mm long, basally apophysate and deeply 5-lobed; limb cylindric, erect, striate, 4-5.5 mm long; lobes triangular or ovate, acute, 1.5-2.5 mm long, erect after anthesis, completely or only distal 2/3 glandular-callose; sinuses acute; corolla cylindric, glabrous or soft puberulent in bud, glabrous at anthesis, 23-31 mm long and 5-7 mm diam., whitish- to violet-blue, or grayish- to purplish-pink (fide label data), the lobes triangular, obtuse, 1.5-2 mm long, with an oblanceolate callose gland in middle; stamen 26-28 mm long; filaments with the short ones glabrous and the long sparsely pilose, alternately 2-5 mm and 9-10 mm long; anthers alternately 25-26 mm and ca. 22 mm long; thecae 10-12 mm long; style 23-29 mm long. Mature berry not seen.
Distribution: SE Ecuador and Peru; premontane wet to montane cloud forest at (1000-)1090-1350(-1850) m altitude. Very rare and very local in distribution.
Type: Peru. Huánuco: SW slope of Río Llulla Pichis watershed, on ascent of Cerros del Sira, steep banks of small lake just below Camp 3, ca. 1280 m, 24 Jul 1969 (fl), Dudley 13231 (holotype: NA, photo NY neg. 10509; isotype: USM n.v.).
Description: Lianoid shrub to 2 m tall or high-climbing epiphytic vine; stem terete or somewhat flattened, smooth, glaucous, glabrous; twigs similar to mature branches but with scattered, tiny, subspherical glands. Leaves oblong or oblong-elliptic, 8-17 x 3-6 cm, base obtuse, rounded, or subcordate, rarely truncate, apex abruptly long- or short-caudate-acuminate, short-pilose along nerves above, glabrous beneath, both surfaces with caducous glandular fimbriae; apparently 5-plinerved (in Ecuador) or pinnately nerved (in Peru) with 4-6 lateral nerves per side, midrib noticeably thickened and raised through proximal half otherwise impressed above and conspicuously raised beneath, lateral nerves impressed above and raised beneath, sometimes arching from midrib and anastomosing near margin to form a collective nerve, veinlets slightly raised on both surfaces; petiole terete or flattened on adaxial surface, slightly rugose, (4-)8-12 mm long, glabrous or puberulent. Inflorescence 13-19-flowered, somewhat fusiform in bud; rachis subterete, bluntly angled, 4-8.5 cm long and 2.5-3.5 mm diam., glabrous; floral bract oblong or oblanceolate, obtuse or rounded, 30-50 x 15-25 mm, glabrous, pink to deep red (fide label data); pedicel subterete, 7-8 mm long and 1-1.2 mm diam. at anthesis but later elongating to 15 mm, glabrous; bracteoles located near base, cucullate, oblong-lanceolate, 2-3.5 x ca. 1 mm, with a conspicuous midrib, glandular callose-thickened marginallly distal 1/3. Flowers with calyx glabrous, 7-9 mm long; hypanthium subcylindric, rugose, 2-3.5 mm long, basally apophysate and deeply 5-lobed; limb cylindric, erect, striate, 4-5.5 mm long; lobes triangular or ovate, acute, 1.5-2.5 mm long, erect after anthesis, completely or only distal 2/3 glandular-callose; sinuses acute; corolla cylindric, glabrous or soft puberulent in bud, glabrous at anthesis, 23-31 mm long and 5-7 mm diam., whitish- to violet-blue, or grayish- to purplish-pink (fide label data), the lobes triangular, obtuse, 1.5-2 mm long, with an oblanceolate callose gland in middle; stamen 26-28 mm long; filaments with the short ones glabrous and the long sparsely pilose, alternately 2-5 mm and 9-10 mm long; anthers alternately 25-26 mm and ca. 22 mm long; thecae 10-12 mm long; style 23-29 mm long. Mature berry not seen.
Distribution: SE Ecuador and Peru; premontane wet to montane cloud forest at (1000-)1090-1350(-1850) m altitude. Very rare and very local in distribution.
Type: Peru. Huánuco: SW slope of Río Llulla Pichis watershed, on ascent of Cerros del Sira, steep banks of small lake just below Camp 3, ca. 1280 m, 24 Jul 1969 (fl), Dudley 13231 (holotype: NA, photo NY neg. 10509; isotype: USM n.v.).
Flora and Monograph Treatment(s):
Cavendishia sirensis Luteyn: [Article] Luteyn, James L. 1983. Ericaceae--part I. Cavendishia. Fl. Neotrop. Monogr. 35: 1-290.
Cavendishia sirensis Luteyn: [Article] Luteyn, James L. 1983. Ericaceae--part I. Cavendishia. Fl. Neotrop. Monogr. 35: 1-290.