Taxon Details: Orthaea brachysiphon (Sleumer) Luteyn
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Narratives:
Family:
Ericaceae (Magnoliophyta)
Ericaceae (Magnoliophyta)
Scientific Name:
Orthaea brachysiphon (Sleumer) Luteyn
Orthaea brachysiphon (Sleumer) Luteyn
Primary Citation:
Nordic J. Bot. 7(1): 33. 1987
Nordic J. Bot. 7(1): 33. 1987
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Description: Epiphytic shrub; mature branches subterete, striate, glabrous, nitid; immature twigs angled, glabrous. Leaves coriaceous, rigid, ovate, 4.5-13.5 x 2.6-6.7 cm, apex acute, obtuse, or short-acuminate, the apex itself obtuse, base rounded, sometimes subcordate, margin remotely crenate with sessile, blunt, glandular teeth, glabrous, nitid on both sides; pinnately nerved, midrib slightly raised above and becoming plane in distal 1/4, conspicuous beneath, lateral nerves 4-7, slightly raised above and beneath, and either inconspicuous or prominent, reticulate veinlets slightly raised on both sides but obscure above and obscure to conspicuous beneath; petiole strongly thickened, rugose, 2-7 mm long and 3-6 mm diam., glabrous. Inflorescence axillary, racemose, flowers 20-40, secund, those near base sometimes caducous; rachis 10-31 cm long, striate, sharply angled, glabrous, deep red; floral bract ovate, acute to acuminate, 2.5-5 x 2-3 mm, proximal 2/3 of margin callose-glandular, blackish; pedicel angled, thickening distally, glabrous, 5-10 mm long and ca. 1.2 mm thick; bracteoles located beneath calyx, similar to floral bract, but 2-3 x ca. 2 mm. Flowers with calyx 8-12 mm long, articulate with pedicel, slightly stipitate, deep red; hypanthium obconic, rugose or smooth, basally truncate, 3-4 mm long, nitid; limb erec to spreading, 5-6.5 mm long, ca. 5 mm diam; lobes deltate, 2-3 x 2.5 mm, acute, eglandular; sinuses obtuse to rounded; corolla tubular, carnose, glabrous, slightly inflated near base, 18-25 mm long and 3.5-6 mm diam., orange-red to scarlet, lobes oblong-ovate, 3.5 mm long, obtuse; stamens 10, equal, about 1/3 as long as corolla, 4-4.5(-7) mm long; filaments distinct, unequal, alternately ca. 2.5 and 3 mm long, densely white hirsute along margin; anther 3-5 mm long; thecae 2-2.5 mm long, strongly granular; tubules conic, 0.75-1 mm long, dehiscing by terminal, slightly flaring pores with an irregular margin; style filiform, glabrous, equalling the corolla.
Distribution: Mexico, Guatemala, Honduras, and Belize, but known from only ca. 7 collections.
Type: Type. Guatemala. Alta Verapaz: Cobán, 1550 m, Jul 1913 (fl), Tuerckheim 4196 (holotype, B?, photo NY ex B. Guatemala. Zacapa: bwtween Loma El Picacho and Cero de Monos, 2000-2600 m, 16 Jan 1942 (fl), Steyermark 42821 (neotype, designated by Luteyn (1996), F; isoneotypes, F, US).
Description: Epiphytic shrub; mature branches subterete, striate, glabrous, nitid; immature twigs angled, glabrous. Leaves coriaceous, rigid, ovate, 4.5-13.5 x 2.6-6.7 cm, apex acute, obtuse, or short-acuminate, the apex itself obtuse, base rounded, sometimes subcordate, margin remotely crenate with sessile, blunt, glandular teeth, glabrous, nitid on both sides; pinnately nerved, midrib slightly raised above and becoming plane in distal 1/4, conspicuous beneath, lateral nerves 4-7, slightly raised above and beneath, and either inconspicuous or prominent, reticulate veinlets slightly raised on both sides but obscure above and obscure to conspicuous beneath; petiole strongly thickened, rugose, 2-7 mm long and 3-6 mm diam., glabrous. Inflorescence axillary, racemose, flowers 20-40, secund, those near base sometimes caducous; rachis 10-31 cm long, striate, sharply angled, glabrous, deep red; floral bract ovate, acute to acuminate, 2.5-5 x 2-3 mm, proximal 2/3 of margin callose-glandular, blackish; pedicel angled, thickening distally, glabrous, 5-10 mm long and ca. 1.2 mm thick; bracteoles located beneath calyx, similar to floral bract, but 2-3 x ca. 2 mm. Flowers with calyx 8-12 mm long, articulate with pedicel, slightly stipitate, deep red; hypanthium obconic, rugose or smooth, basally truncate, 3-4 mm long, nitid; limb erec to spreading, 5-6.5 mm long, ca. 5 mm diam; lobes deltate, 2-3 x 2.5 mm, acute, eglandular; sinuses obtuse to rounded; corolla tubular, carnose, glabrous, slightly inflated near base, 18-25 mm long and 3.5-6 mm diam., orange-red to scarlet, lobes oblong-ovate, 3.5 mm long, obtuse; stamens 10, equal, about 1/3 as long as corolla, 4-4.5(-7) mm long; filaments distinct, unequal, alternately ca. 2.5 and 3 mm long, densely white hirsute along margin; anther 3-5 mm long; thecae 2-2.5 mm long, strongly granular; tubules conic, 0.75-1 mm long, dehiscing by terminal, slightly flaring pores with an irregular margin; style filiform, glabrous, equalling the corolla.
Distribution: Mexico, Guatemala, Honduras, and Belize, but known from only ca. 7 collections.
Type: Type. Guatemala. Alta Verapaz: Cobán, 1550 m, Jul 1913 (fl), Tuerckheim 4196 (holotype, B?, photo NY ex B. Guatemala. Zacapa: bwtween Loma El Picacho and Cero de Monos, 2000-2600 m, 16 Jan 1942 (fl), Steyermark 42821 (neotype, designated by Luteyn (1996), F; isoneotypes, F, US).
Flora and Monograph Treatment(s):
Orthaea brachysiphon (Sleumer) Luteyn: [Article] 1987. Nordic J. Bot. 7(1): 33.
Orthaea brachysiphon (Sleumer) Luteyn: [Article] 1987. Nordic J. Bot. 7(1): 33.