Taxon Details: Psammisia orientalis Luteyn
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Narratives:
Family:
Ericaceae (Magnoliophyta)
Ericaceae (Magnoliophyta)
Scientific Name:
Psammisia orientalis Luteyn
Psammisia orientalis Luteyn
Primary Citation:
Fl. Ecuador 54: 188. 1996
Fl. Ecuador 54: 188. 1996
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Description: Epiphytic shrub; stem terete, striate, bark exfoliating in thin strips, nitid, glabrous; twigs subterete, bluntly complanate, striate, nitid, glabrous. Leaves coriaceous, narrowly ovate-elliptic, 12.5-19.5 x 3.5-6 cm, base rounded, apex acuminate, margin entire, lamina glabrous but with two to several circular, concave, blackish glandsca. 0.2-0.3 mm diam. near base beneath; pinnately nerved withca. 4-5 pairs of lateral nerves per side, midrib and lateral nerves impressed above and conspicuously raised beneath, reticulate veinlets slightly raised on both surfaces; petiole subterete, stout, slightly winged, carinate,ca. 5-6 mm long, glabrous. Inflorescence cauliflorous on older stems, solitary, racemose, 10-15-flowered; rachis subterete, congested,ca. 1-1.5 cm long, glabrous; floral bract triangular, acuminate, 1-2 mm long, reflexed post-anthesis, glabrous; pedicel subterete, striate, 15-18 mm long, glabrous; bracteoles nearly basal, ovate, acuminate,ca. 0.7-1 mm long, marginally scarious. Flowers with calyxca. 3-4 mm long, glabrous; hypanthium cylindric-campanulate,ca. 1.5-2 mm long, the base rounded; limb campanulate, wide-spreading,ca. 2 mm long; lobes broadly ovate-deltate, acuminate to apiculate,ca. 1 mm long, margins appearing torn; sinuses acute; corolla cylindric, twice-constricted: weakly constricted about the middle and abruptly and strongly constricted distally near the throat,ca. 15 mm long and 3-4 mm diam. when dry, glabrous but with glandular fimbriae distal to constriction (i.e., along throat), orange to reddish-orange below constriction, pale green distally, the lobes spreading, narrowly oblong-ovate, acute,ca. 3-4 mm long, green; stamenca. 8.5-9 mm long; filaments distinct,ca. 2.5-3.5 mm long, densely puberulent along margin, the connectives alternately minutely spurred, these present but inconspicuous; anthersca. 7-8 mm long; thecae 4.5-6 mm long, the base narrowed and often incurved; tubules distinct to basally connate, somewhat geniculate, 2.5-3 mm long, dehiscing by clefts, 1-1.3 mm long; style very long-exserted, 22-27 mm long, glabrous, the exserted portion reddish. Berry not seen.
Distribution: Endemic to Ecuador (Morona-Santiago) and known only from two collections; primary moist forest at 1400-1600 m altitude.
Type: Ecuador. Morona-Santiago, Limón-La Unión construction rd,ca. 10 km from Limón, 1400 m, 27 Feb 1993 (fl), Harling & Stahl 26732 (holotype, GB, photo NY neg. 13001; isotype, S).
Description: Epiphytic shrub; stem terete, striate, bark exfoliating in thin strips, nitid, glabrous; twigs subterete, bluntly complanate, striate, nitid, glabrous. Leaves coriaceous, narrowly ovate-elliptic, 12.5-19.5 x 3.5-6 cm, base rounded, apex acuminate, margin entire, lamina glabrous but with two to several circular, concave, blackish glandsca. 0.2-0.3 mm diam. near base beneath; pinnately nerved withca. 4-5 pairs of lateral nerves per side, midrib and lateral nerves impressed above and conspicuously raised beneath, reticulate veinlets slightly raised on both surfaces; petiole subterete, stout, slightly winged, carinate,ca. 5-6 mm long, glabrous. Inflorescence cauliflorous on older stems, solitary, racemose, 10-15-flowered; rachis subterete, congested,ca. 1-1.5 cm long, glabrous; floral bract triangular, acuminate, 1-2 mm long, reflexed post-anthesis, glabrous; pedicel subterete, striate, 15-18 mm long, glabrous; bracteoles nearly basal, ovate, acuminate,ca. 0.7-1 mm long, marginally scarious. Flowers with calyxca. 3-4 mm long, glabrous; hypanthium cylindric-campanulate,ca. 1.5-2 mm long, the base rounded; limb campanulate, wide-spreading,ca. 2 mm long; lobes broadly ovate-deltate, acuminate to apiculate,ca. 1 mm long, margins appearing torn; sinuses acute; corolla cylindric, twice-constricted: weakly constricted about the middle and abruptly and strongly constricted distally near the throat,ca. 15 mm long and 3-4 mm diam. when dry, glabrous but with glandular fimbriae distal to constriction (i.e., along throat), orange to reddish-orange below constriction, pale green distally, the lobes spreading, narrowly oblong-ovate, acute,ca. 3-4 mm long, green; stamenca. 8.5-9 mm long; filaments distinct,ca. 2.5-3.5 mm long, densely puberulent along margin, the connectives alternately minutely spurred, these present but inconspicuous; anthersca. 7-8 mm long; thecae 4.5-6 mm long, the base narrowed and often incurved; tubules distinct to basally connate, somewhat geniculate, 2.5-3 mm long, dehiscing by clefts, 1-1.3 mm long; style very long-exserted, 22-27 mm long, glabrous, the exserted portion reddish. Berry not seen.
Distribution: Endemic to Ecuador (Morona-Santiago) and known only from two collections; primary moist forest at 1400-1600 m altitude.
Type: Ecuador. Morona-Santiago, Limón-La Unión construction rd,ca. 10 km from Limón, 1400 m, 27 Feb 1993 (fl), Harling & Stahl 26732 (holotype, GB, photo NY neg. 13001; isotype, S).