Krenakanthus roseolilacinus Leme, Zizka & Paule 2022, comb. nov
| Autor: | Leme, Elton M. C., Zizka, Georg, Souza, Everton Hilo De, Paule, Juraj, De Carvalho, Jordano D. T., Mariath, Jorge E. A., Halbritter, Heidemarie, Ribeiro, Otávio B. C. |
|---|---|
| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.5281/zenodo.6503838 |
| Popis: | Krenakanthus roseolilacinus (Leme) Leme, Zizka & Paule, comb. nov. Basionym:— Orthophytum roseolilacinum Leme, Phytotaxa 205: 284. 2015. Type:— BRAZIL. Minas Gerais: Conselheiro Pena, Serra do Padre Ângelo, Mata do Elias, 810 m elevation, 19° 17’ 14.71” S, 41° 34’ 13.47” W, May 2014, R. Vasconcelos Leitão & E.C. Ribeiro s.n., cult. E . Leme 8885 (holotype RB!). Description:— Plants terrestrial, monoecious, long caulescent, flowering 30–60 cm tall, propagating by elongated shoots developing near the base of the inflorescence. Leaves 20–27 in number, thin in texture, chartaceous, except for a thicker median zone mainly toward the base, spreading-recurved, more or less equally arranged along the stem, forming a subdense rosette; sheath trapeziform, ca. 2 × 3.5 cm, pale green, glabrescent, densely spinulose; blade narrowly lanceolate, long attenuate then caudate, not narrowed at the base, 17–27 × 1.8–2.4 cm, green, concolorous, glabrescent to glabrous, margins undulate mainly toward the base, densely spinulose; spines pale green, the basal ones narrowly triangular, 1–3 mm long, 2–4 mm apart, spreading to slightly antrorse, the upper ones triangular, 0.2–0.3 mm long, 1–3 mm apart, antrorse. Inflorescence sessile, 3.5–5 cm long, corymbose, sparsely branched only at the base and simple toward the apex; primary bracts foliaceous, not contrasting in color with the leaf blades spreading-recurved, many times exceeding the fascicles; flower fascicles only 1–2 in number, densely aggregated, 30–32 × 14–16 mm (excluding the petals), ca. 7 mm thick, 2–4-flowered, stipes inconspicuous, stout, ca. 5 mm long; floral bracts in the fascicles triangular, acuminate-caudate, membranaceous, green toward the apex, hyaline near the base, glabrous, nerved, slightly shorter than the sepals, alate-carinate (the outer ones) to obtusely if at all carinate (the inner ones), 20– 26 × 14–15 mm, margins entire to spinulose at the apex; floral bracts in the unbranched apical part of the inflorescence resembling the leaves, many times exceeding (basal ones) to slightly shorter than the flowers (apical ones). Flowers all perfect, sessile, 42–55 mm long, fragrant; sepals 20–27 × 4–5 mm, sublinear-lanceolate to narrowly ovate-lanceolate, acuminate-caudate, connate at the base for 3–7 mm, green but drying dark castaneous soon after anthesis, glabrous, thin in texture, the adaxial ones alate-carinate with the keel decurrent on the ovary, the abaxial one obtusely if at all carinate; petals broadly spathulate from a very narrow base, 35–44 × 15–20 mm, 1.8–2.9 times longer than wide, free, greenish-white toward the base, rose-lilac to lilac-purple toward the apex, the blades suborbicular, broadly acute to rounded, spreading at anthesis and flaccidescent afterwards, the distal margins bearing sparse and inconspicuous glandular trichomes, bearing 2 longitudinal callosities at the base, equaling to exceeding the antesepalous filaments, and 2 appendages at the base; appendages ca . 2.5 mm above the base, thick, cupuliform, margins downwardly curved, minutely and obtusely crenulate. Stamens deeply included and not visible; filament distinctly unequal in length, the antepetalous ones 4–6 mm long, adnate to the petals for ca. 1.5 mm, the antesepalous ones 11–14 mm long, free; anther 1.5–2 mm long, oblong, dorsifixed at ca. 1/3 from the base, base bilobed, apex obtuse or minutely apiculate; pollen sulcate, oblate, ca. 45 μm long, reticulate, reticulum broadly meshed proximally and meshes distinctly decreasing in width towards the sulcus margins, the sulcus narrow, covered by small exine elements, margins weakly defined; style slightly exceeding the antepetalous stamens and distinctly shorter than the antesepalous ones, white; stigma conduplicate-spiral, lobes elongated, loosely contorted, densely papillose; ovary 5–7 mm long, 5–8 mm in diameter at the apex, trigonous, white, glabrous; epigynous tube lacking; ovules numerous, obtuse; placentation median to apical. Fruits baccate, subglobose, whitish toward the base, yellowish toward the apex, obtusely angulose, 8–10 × 7–12 mm, sepals persistent, 2.5–3.5 times longer than the fruit length; seeds few to numerous, narrowly ovoid to fusiform, 2–3 × 0.7–1 mm, slightly to distinctly curved, distinctly sulcate, dark brown, bearing a unilateral, thick, greenish-transluscent raphe. Published as part of Leme, Elton M. C., Zizka, Georg, Souza, Everton Hilo De, Paule, Juraj, De Carvalho, Jordano D. T., Mariath, Jorge E. A., Halbritter, Heidemarie & Ribeiro, Otávio B. C., 2022, New genera and a new species in the " Cryptanthoid Complex " (Bromeliaceae: Bromelioideae) based on the morphology of recently discovered species, seed anatomy, and improvements in molecular phylogeny, pp. 128-170 in Phytotaxa 544 (2) on page 145, DOI: 10.11646/phytotaxa.544.2.2, http://zenodo.org/record/6503832 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|