Taxon Details: Ceratostema ventricosum A.C.Sm.
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Narratives:
Family:
Ericaceae (Magnoliophyta)
Ericaceae (Magnoliophyta)
Scientific Name:
Ceratostema ventricosum A.C.Sm.
Ceratostema ventricosum A.C.Sm.
Primary Citation:
Mem. New York Bot. Gard. 8: 60. 1952
Mem. New York Bot. Gard. 8: 60. 1952
Accepted Name:
This name is currently accepted.
This name is currently accepted.
Description:
Description: Terrestrial or epiphytic shrub from lignotuber, somewhat scandent with branches to 1.5 m long; stem terete, striate, the bark cracking longitudinally, glabrate; twigs terete to subterete, sometimes sharply angled, striate white puberulent, glabrate; bud scales inconspicuous, ovate to oblong, acuminate, ca. 2 mm long, short-pilose. Leaves lanceolate or ovate-elliptic, 6-12 x 2-5.3 cm, base obtuse or rounded, apex broadly or abruptly and sharply acuminate, margin entire, not recurved, glabrous to short-pilose on both surfaces, persisting usually on midrib beneath; 3-5(-obscurely 7)-plinerved, the inner nerves arising ca. 1 cm above the base, midrib and lateral nerves slightly raised or impressed above, but raised beneath, reticulate veinlets raised or impressed above and raised beneath; petiole subterete, rugulose, 2-6 mm long, puberulent, glabrate. Inflorescence axillary, racemose, (2-)5-22-flowered; rachis terete to subterete and sharply angled, rugulose, striate, 0.8-7 cm long, obscurely white puberulent to persistently short-pilose; floral bract deltate, acute, 1.5-4 mm long, usually dorsally bearing a circular, concave, black gland ca. 0.3-0.4 mm diam., puberulent dorsally, margin deciduously glandular-fimbriate with glands ca. 0.2 mm long; pedicel terete to subterete, striate puberulent or short-pilose as rachis, 13-27(-35 mm in fruit) mm long; bracteoles located midway along the pedicel, similar to floral bract. Flowers with calyx 5-7 mm long and 7-9 mm diam. at apex, sparsely puberulent to persistently pilose; hypanthium cylindric, terete, 2-3.5 mm long; limb cylindric-spreading, 4-5 mm long; lobes oblong-ovate, acuminate, 2-3.5 x 3 mm, usually each lobe dorsally bearing a circular, concave, black gland ca. 0.5 mm diam., margin appearing torn, ciliate, glandular-fimbriate; sinuses acute or obtuse; corolla fleshy, cylindric-urceolate, basally ventricose, 35-48 mm long and 8-17 mm diam. at base, red to crimson, glabrous at base and glabrous or short-pilose in distal half to short-pilose over entire length, the lobes subulate-lanceolate, 17-20 x 3 mm, dark blue-black, usually each lobe bearing along each margin near the base a circular, concave, black gland ca. 0.2-0.3 mm diam. (sometimes two per side, sometimes none); stamen 10, alternately unequal, equalling the corolla, 33-44 mm long; filaments distinct, 4-6(-8) mm long, glabrous or sparsely pilose within; anthers 29-39 mm long; thecae about equalling tubules, 12-19 mm long, the base obtuse and slightly incurved; tubules 12-20 mm long, dehiscing by oblique pores 0.5-1 mm long; style equalling corolla or slightly exserted; nectariferous disc fleshy, annular-pulvinate, glabrous. Young berry pilose, to 9 mm diam.
Distribution: Endemic to Ecuador and known only from six collections; montane forest, at 1372-2460 m altitude.
Conservation Status: Rare and endangered.
Type: Ecuador. Morona-Santiago: E slope, near junction of the Pailas and Negro rivers, 1830-2290 m, 20-24 Aug 1945 (fl), Camp E-4912 (holotype, US; isotypes, F, GH, K, NY; photo of F type F neg. 59444).
Description: Terrestrial or epiphytic shrub from lignotuber, somewhat scandent with branches to 1.5 m long; stem terete, striate, the bark cracking longitudinally, glabrate; twigs terete to subterete, sometimes sharply angled, striate white puberulent, glabrate; bud scales inconspicuous, ovate to oblong, acuminate, ca. 2 mm long, short-pilose. Leaves lanceolate or ovate-elliptic, 6-12 x 2-5.3 cm, base obtuse or rounded, apex broadly or abruptly and sharply acuminate, margin entire, not recurved, glabrous to short-pilose on both surfaces, persisting usually on midrib beneath; 3-5(-obscurely 7)-plinerved, the inner nerves arising ca. 1 cm above the base, midrib and lateral nerves slightly raised or impressed above, but raised beneath, reticulate veinlets raised or impressed above and raised beneath; petiole subterete, rugulose, 2-6 mm long, puberulent, glabrate. Inflorescence axillary, racemose, (2-)5-22-flowered; rachis terete to subterete and sharply angled, rugulose, striate, 0.8-7 cm long, obscurely white puberulent to persistently short-pilose; floral bract deltate, acute, 1.5-4 mm long, usually dorsally bearing a circular, concave, black gland ca. 0.3-0.4 mm diam., puberulent dorsally, margin deciduously glandular-fimbriate with glands ca. 0.2 mm long; pedicel terete to subterete, striate puberulent or short-pilose as rachis, 13-27(-35 mm in fruit) mm long; bracteoles located midway along the pedicel, similar to floral bract. Flowers with calyx 5-7 mm long and 7-9 mm diam. at apex, sparsely puberulent to persistently pilose; hypanthium cylindric, terete, 2-3.5 mm long; limb cylindric-spreading, 4-5 mm long; lobes oblong-ovate, acuminate, 2-3.5 x 3 mm, usually each lobe dorsally bearing a circular, concave, black gland ca. 0.5 mm diam., margin appearing torn, ciliate, glandular-fimbriate; sinuses acute or obtuse; corolla fleshy, cylindric-urceolate, basally ventricose, 35-48 mm long and 8-17 mm diam. at base, red to crimson, glabrous at base and glabrous or short-pilose in distal half to short-pilose over entire length, the lobes subulate-lanceolate, 17-20 x 3 mm, dark blue-black, usually each lobe bearing along each margin near the base a circular, concave, black gland ca. 0.2-0.3 mm diam. (sometimes two per side, sometimes none); stamen 10, alternately unequal, equalling the corolla, 33-44 mm long; filaments distinct, 4-6(-8) mm long, glabrous or sparsely pilose within; anthers 29-39 mm long; thecae about equalling tubules, 12-19 mm long, the base obtuse and slightly incurved; tubules 12-20 mm long, dehiscing by oblique pores 0.5-1 mm long; style equalling corolla or slightly exserted; nectariferous disc fleshy, annular-pulvinate, glabrous. Young berry pilose, to 9 mm diam.
Distribution: Endemic to Ecuador and known only from six collections; montane forest, at 1372-2460 m altitude.
Conservation Status: Rare and endangered.
Type: Ecuador. Morona-Santiago: E slope, near junction of the Pailas and Negro rivers, 1830-2290 m, 20-24 Aug 1945 (fl), Camp E-4912 (holotype, US; isotypes, F, GH, K, NY; photo of F type F neg. 59444).
Flora and Monograph Treatment(s):
Ceratostema ventricosum A.C.Sm.: [Article] 1952. Mem. New York Bot. Gard. 8: 60.
Ceratostema ventricosum A.C.Sm.: [Article] Smith, Albert C. 1952. Plants collected in Ecuador by W. H. camp. Vaceiniaceae. Mem. New York Bot. Gard. 8 (1): 41-85.
Ceratostema ventricosum A.C.Sm.: [Article] 1952. Mem. New York Bot. Gard. 8: 60.
Ceratostema ventricosum A.C.Sm.: [Article] Smith, Albert C. 1952. Plants collected in Ecuador by W. H. camp. Vaceiniaceae. Mem. New York Bot. Gard. 8 (1): 41-85.