Taxon Details: Psammisia aurantiaca Luteyn
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Family:
Ericaceae (Magnoliophyta)
Ericaceae (Magnoliophyta)
Scientific Name:
Psammisia aurantiaca Luteyn
Psammisia aurantiaca Luteyn
Primary Citation:
Opera Bot. 92: 121. 1987
Opera Bot. 92: 121. 1987
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Description: Terrestrial shrub with branches to 2 m long, glabrous thoughout; stem terete, striate; twigs complanate. Leaves coriaceous, ovate to ovate-elliptic, 5-10 x 1.5-3 cm, base obtuse or broadly cuneate, apex acuminate, margin entire or slightly revolute in proximal one-third; 5(-7)-plinerved from near the base, midrib and lateral nerves impressed above and raised beneath, lateral nerves sometimes slightly raised distally above, reticulate veinlets slightly raised but obscure on both surfaces; petiole subterete, minutely winged, rugose, 4-7 mm long. Inflorescence solitary, racemose, 4-7-flowered; rachis terete, congested, 10-12 mm long; floral bract persistent, ± clasping, broadly ovate, short-acuminate, 1-2.5 mm long; pedicel terete, 8-13 mm long, bearing glandular fimbriae at the articulation with the calyx; bracteoles nearly basal, ovate, acuminate, ca. 1.5 mm long. Flowers with calyx 4-5 mm long, green suffused with orange; hypanthium campanulate, 2.5-3 mm long; limb erect-spreading, 1.5-2 mm long; lobes broadly ovate, apiculate, less than 1 mm long, sometimes nearly obscure with marginally appearing torn and purple when fresh, but when dry conspicuous and usually reflexed; sinuses acute; corolla succulent, cylindric-conical, conspicuously constricted and narrowed at the throat, 15-20 mm long and 11-12 mm diam., the lower 1/2 (8-12 mm) bright orange, the upper 1/2 (constricted portion, 7-8 mm) including lobes light green to white and 6-7 mm diam., the lobes spreading and reflexed, narrowly oblong-ovate, acute, 2-4 mm long, marginally red to maroon; stamen alternately slightly unequal, 9-10 mm long; filaments 3-3.5 mm long, weakly short-pilose distally on ventral surface, the connectives alternately weakly spurred; anthers 7-8 mm long; thecae ca. 4 mm long; tubules ca. 3-4 mm long; style long-exserted, 18-24 mm long. Berry to 16 mm diam.
Distribution: Endemic to Ecuador (Pichincha) and known only from two collections; montane cloud forest. at 2148-2460 m altitude.
Type: Ecuador. Pichincha: Quito-Santo Domingo de los Colorados old rd, ca. 3-16 km W of San Juan de Chiriboga, 2460-3350 m, 4 Feb 1983 (fl, fr), Luteyn et al. 8806 (holotype, NY, photo NY neg. 11114; isotypes, AAU, CAS, E, GB, K, L, MEXU, MO, QCA, STE, TEX, US).
Illustration: Luteyn (1996), fig. 10F-J.
Conservation Status: Rare and endangered.
Description: Terrestrial shrub with branches to 2 m long, glabrous thoughout; stem terete, striate; twigs complanate. Leaves coriaceous, ovate to ovate-elliptic, 5-10 x 1.5-3 cm, base obtuse or broadly cuneate, apex acuminate, margin entire or slightly revolute in proximal one-third; 5(-7)-plinerved from near the base, midrib and lateral nerves impressed above and raised beneath, lateral nerves sometimes slightly raised distally above, reticulate veinlets slightly raised but obscure on both surfaces; petiole subterete, minutely winged, rugose, 4-7 mm long. Inflorescence solitary, racemose, 4-7-flowered; rachis terete, congested, 10-12 mm long; floral bract persistent, ± clasping, broadly ovate, short-acuminate, 1-2.5 mm long; pedicel terete, 8-13 mm long, bearing glandular fimbriae at the articulation with the calyx; bracteoles nearly basal, ovate, acuminate, ca. 1.5 mm long. Flowers with calyx 4-5 mm long, green suffused with orange; hypanthium campanulate, 2.5-3 mm long; limb erect-spreading, 1.5-2 mm long; lobes broadly ovate, apiculate, less than 1 mm long, sometimes nearly obscure with marginally appearing torn and purple when fresh, but when dry conspicuous and usually reflexed; sinuses acute; corolla succulent, cylindric-conical, conspicuously constricted and narrowed at the throat, 15-20 mm long and 11-12 mm diam., the lower 1/2 (8-12 mm) bright orange, the upper 1/2 (constricted portion, 7-8 mm) including lobes light green to white and 6-7 mm diam., the lobes spreading and reflexed, narrowly oblong-ovate, acute, 2-4 mm long, marginally red to maroon; stamen alternately slightly unequal, 9-10 mm long; filaments 3-3.5 mm long, weakly short-pilose distally on ventral surface, the connectives alternately weakly spurred; anthers 7-8 mm long; thecae ca. 4 mm long; tubules ca. 3-4 mm long; style long-exserted, 18-24 mm long. Berry to 16 mm diam.
Distribution: Endemic to Ecuador (Pichincha) and known only from two collections; montane cloud forest. at 2148-2460 m altitude.
Type: Ecuador. Pichincha: Quito-Santo Domingo de los Colorados old rd, ca. 3-16 km W of San Juan de Chiriboga, 2460-3350 m, 4 Feb 1983 (fl, fr), Luteyn et al. 8806 (holotype, NY, photo NY neg. 11114; isotypes, AAU, CAS, E, GB, K, L, MEXU, MO, QCA, STE, TEX, US).
Illustration: Luteyn (1996), fig. 10F-J.
Conservation Status: Rare and endangered.