taxonID	type	description	language	source
92698485F25650E9A89766DFE6A0CA62.taxon	description	Figs 1, 3	en	Jiménez, Marco M., Garzón-Suárez, Henry X., Iturralde, Gabriel A. (2025): A new species of Ceratostema (Ericaceae) with nearly tubular leaves from the Cordillera del Cóndor, Ecuador. PhytoKeys 261: 77-86, DOI: 10.3897/phytokeys.261.156555
92698485F25650E9A89766DFE6A0CA62.taxon	diagnosis	Diagnosis. Ceratostema revoluta is distinguished from other members of the genus by its nearly tubular, linear-lanceolate leaves with revolute margins, pulvinate petioles, sessile inflorescences with reddish flowers with white base and brownish to black lobes, short complanate pedicels with basal carinate appressed bracteoles and appressed calyx lobes that overlap each other below the middle (Fig. 1).	en	Jiménez, Marco M., Garzón-Suárez, Henry X., Iturralde, Gabriel A. (2025): A new species of Ceratostema (Ericaceae) with nearly tubular leaves from the Cordillera del Cóndor, Ecuador. PhytoKeys 261: 77-86, DOI: 10.3897/phytokeys.261.156555
92698485F25650E9A89766DFE6A0CA62.taxon	description	Description. Erect, epiphytic shrubs; indumentum of subpersistent trichomes, arranged unevenly, white, eglandular, 0.3 – 0.9 mm long, sparse to dense on younger branches, petioles, leaf blades, inflorescences and flowers, excluding stamens and style; roots axonomorphous, with well-developed lignotubers, lignotubers subspherical to fusiform, 5.6 – 8.5 × 4.3 – 7.4 cm, 13.4 – 17.3 cm in diameter. Stems terete to subterete, slightly arching, up to 1 m long, glabrous, arising from the lignotuber; older stems dark brown, cracking longitudinally and exfoliating; younger branches pendent, slightly arcuate, pale green, terete, ca. 25.7 cm long, 2.8 mm wide, puberulous, becoming striate and dark brown when old or after exfoliation; axillary buds 2 – 3, emerging 1 mm below leaf node, foliar bracts pale pink, narrowly triangular, 0.9 – 1.2 × 0.7 mm, puberulous. Leaves spirally arranged, suberect to nearly horizontal; petioles pale pink, pulvinate, 2.1 – 3.0 × 1.3 – 1.7 mm, puberulous; blades dark green and somewhat lustrous adaxially, paler abaxially, linear-lanceolate, nearly tubular, 2.0 – 5.7 × 0.4 cm, thinly coriaceous, puberulent adaxially and tomentulose abaxially, glabrescent, mid-vein impressed adaxially, conspicuous and raised abaxially, venation obscure, 3 - plinerved from near base and reticulate against a backlight, base cuneate, margins strongly revolute and longitudinally curled, apex acute. Inflorescence supraxillary, sessile, congested, 4 – 8 mm × 4.1 – 5.9 mm, 3 – 9 - flowered; rachis obconic, rugose, covered by bracts, tomentose; bracts persistent, up to 10, dark brownish-red, paler towards base, ovate to transversely ovate, 3.0 – 14.2 × 3.6 – 9.5 mm, apex obtuse; bracts persistent, similar in colour and texture to bracts, ovate, 16.5 – 21.0 × 6.3 – 10.5 mm, acute to attenuate; pedicel dark red, complanate, 4.0 – 4.4 × 3.1 – 3.6 mm, tomentose; articulation present between pedicel and hypanthium; bracteoles persistent, 2, located near middle, oppositely arranged, dark brownish-red, long ovate-triangular, 15.2 – 17.6 × 3.9 – 4.3 mm, channelled abaxially, centrally carinate adaxially, margins long-ciliate, apex attenuate. Flowers pentamerous, pendulous; hypanthium green, except margins pale purple, reddish towards apex, obconic, obscurely pentagonal, 3.0 – 4.2 × 4.0 – 5.7 mm, tomentose; calyx erect, open, 12.7 – 21.5 × 4.0 – 7.0 mm, tomentose, hairs white, limb 0.4 – 1.3 × 4.0 – 5.7 mm; lobes 5, nearly reaching throat of corolla, overlapping in basal half, black, except reddish towards base, lanceolate, slightly convex, 12.3 – 20.2 × 4.0 – 5.4 mm, tomentose, base attenuate, margin long-ciliate, apex acuminate, sinuses acute. Corolla white-tomentose on apical half, whitish at base, reddish-brown in middle, tubular, except slightly dilated proximally and expanded distally, 4.0 – 5.1 cm long (including lobes), 4.5 mm in diameter at base and throat, thick-carnose, bistratose; lobes 5, spreading, black, narrowly linear-triangular, 15.9 – 22.5 × 2.3 – 2.8 mm, lustrous, tomentose externally, glabrous internally, channelled and subverrucose internally, slightly recurved to base, apex acute. Stamens 10, nearly equalling corolla, in two series somewhat unequal in length, 3.7 – 4.7 cm long; filaments connate, each separated by a longitudinal line dorsally, white, 10.4 – 12.7 mm long, glabrous and lustrous on both sides; anthers 3.2 – 4.3 cm long, thecae conspicuously papillose, 6.6 – 7.7 mm long, prognathous with a basal appendage ca. 0.4 mm long; tubules distinct, but apparently connate in proximal 5 / 6, 2.5 – 3.2 cm long, glabrous, dehiscing by terminal pores, ca. 1.1 × 0.2 mm. Style exserted, longer than stamens, dark reddish-brown, 4.1 – 4.7 cm long, glabrous, base white; stigma truncate. Fruit a berry, purplish when ripe, globose, ca. 12.8 × 12.9 mm in diameter, pubescent, calyx lobes persistent.	en	Jiménez, Marco M., Garzón-Suárez, Henry X., Iturralde, Gabriel A. (2025): A new species of Ceratostema (Ericaceae) with nearly tubular leaves from the Cordillera del Cóndor, Ecuador. PhytoKeys 261: 77-86, DOI: 10.3897/phytokeys.261.156555
92698485F25650E9A89766DFE6A0CA62.taxon	distribution	Distribution and habitat. Ceratostema revoluta has been reported in the south-eastern Province of Morona Santiago (Fig. 2). The species is only known from the steep western foothills of the northern part of the Cordillera del Condor, where it was found in the region east of San Juan Bosco at elevations between 1300 and 1700 m.	en	Jiménez, Marco M., Garzón-Suárez, Henry X., Iturralde, Gabriel A. (2025): A new species of Ceratostema (Ericaceae) with nearly tubular leaves from the Cordillera del Cóndor, Ecuador. PhytoKeys 261: 77-86, DOI: 10.3897/phytokeys.261.156555
92698485F25650E9A89766DFE6A0CA62.taxon	etymology	Etymology. The new species is named by the strongly revolute margins of the leaves.	en	Jiménez, Marco M., Garzón-Suárez, Henry X., Iturralde, Gabriel A. (2025): A new species of Ceratostema (Ericaceae) with nearly tubular leaves from the Cordillera del Cóndor, Ecuador. PhytoKeys 261: 77-86, DOI: 10.3897/phytokeys.261.156555
