Cushion-forming perennial herb, taproot eventually up to c. 10 mm diam., woody, 1 to several leaf rosettes crowded on the crown, or spreading rhizomatously into small mats. Stems 1 from each rosette, terminal, simple, erect or ascending, mostly 30-100 mm long, exceptionally up to 150-300 mm, clad in retrorse white hairs, either leafy or almost wholly bracteate. Radical leaves mostly 10-25(-30) x 1-5(-9) mm, linear, elliptic or spathulate tapering to a broad, flat petiolar part accounting for up to half the total leaf length, bases closely imbricate, apex obtuse to acute, margins entire or obscurely toothed, sometimes glabrous, usually a few coarse hairs on margins and midline, rarely sparsely hairy all over, often thick-textured; cauline leaves broad-based, otherwise more or less resembling the radical leaves, ascending. Flowers crowded in a short or long spike, usually remaining crowded in fruit, opening at dusk or in dull light and then sweetly scented. Bracts adnate to calyx for 2-5 mm, usually shorter and much broader than the leaves, mostly (9-)12-20(-26) x 4-9 mm, elliptic, obtuse to acuminate, broad-based and clasping the calyx, margins entire or with 1 or 2, rarely more, pairs of callose teeth near apex, hairy as the leaves. Calyx 8-12 mm long, lips 3.2-4.5 mm long, thinly hairy on upper margins and sometimes on keels, occasionally hairs wanting. Corolla tube 30-50 mm long, glandular-puberulous, hairs up to 0.1-0.25 mm long, limb held horizontally, regular; mouth with circlet of long unicellular hairs; lobes mostly 5-8 mm long, deeply notched, crimson and glandular-puberulous outside, white inside, either eglandular or with a few minute glands near the sinuses. Stamens 4, anticous anthers 1.8-2.3 mm long, shortly exserted, posticous ones 3.54 mm long, included. Stigma 3.5-8 mm long, exserted. Capsule c. 8-10 x 4 mm. Seeds c. 1.4 x 1 mm, angled, colliculate, pallid.
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Perennial herb, up to 0.3 m high; pulvinate with many, crowded, green, leaf rosettes forming dense cushions or small mats. Stems single per leaf rosette; leafy, bracteate to apex; clad in retrorse white hairs. Leaves with radical ones long-petiolate; blade linear, elliptic or spathulate, cauline ones similar but broad-based; sparsely hairy. Flowers: many in a spike, not elongating in fruit; corolla with tube up to 50 mm long, limb regular, held ± horizontal, mouth ringed by long hairs, tube flushed dark red, lobes glabrous above, with outer surface crimson, inner surface white; Oct.-Jan., opening at dusk or in dull light.
Perennial herb, up to 100(-300) mm high; forming small cushions or mats, by way of stems from several leaf rosettes on crown or by spreading rhizomes; stems single per leaf rosette, leafy, gradually bracteate to apex. Leaves: radical, long-petiolate, linear, elliptic or spathulate; cauline ones similar but broad-based; sparsely hairy. Flowers many grouped in a spike, usually not elongating in fruit. Corolla: tube up to 50 mm long; limb regular; mouth ringed by long hairs. Flowering time Oct.-Jan.
Perennial herb, pulvinate with many crowded green leaf rosettes forming dense cushions or smal mats. Flowers with lobes crimson outside, white inside, tube flushed dark red.