Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Details
Parahebe lyallii (Hook.f.) W.R.B.Oliv., Rec. Domin. Mus. 1: 230 (1944)
Nomenclature
W.R.B.Oliv.
Hook.f.
(Hook.f.) W.R.B.Oliv.
1944
230
ICN
species
Parahebe lyallii
Classification
Descriptions
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Low much-branched subshrub; stems slender, us. woody at base, prostrate to decumbent and rooting at nodes below, rarely ± erect; branches decumbent to ascending, bifariously to uniformly pubescent with crisped white hairs. Lvs membr. to subcoriac., sts fleshy and reddish when fresh, glab. or midrib and petiole pubescent above; lamina 5-10-(15) × (2)-4-8-(10) mm., suborbicular to ovate to ovate-oblong or linear-obovate, ± deeply crenate to bluntly serrate, tip obtusely rounded to subacute, base cuneately narrowed into petiole 2-3 mm. long. Racemes us. ∞-fld; peduncles slender, 3-8 cm. long, glab. to densely pubescent, sts also glandular-hairy; bracts ovate to linear, lower occ. subfoliaceous, 2.5-5 mm. long, glab.; pedicels 8-15 mm. long, sparsely to densely pubescent or glandular-hairy. Calyx-lobes 2.5-4·5 mm. long, obovate-oblong, acute, ciliolate. Corolla white to pink, c. 1 cm. diam.; tube c. 1 mm. long, much < calyx; lobes 4, unequal, spreading, broadly rounded, up to 8 mm. wide. Capsule 3·5-5 × 3-4 mm., little to much > calyx, broad-obovate, emarginate, turgid, glab.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
n = 21
2n = 42
n = 21
2n = 42
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Subshrub, (2–)5–20(–30) cm tall. Old stems brown or red-brown or grey. Branches prostrate to erect. Branchlets brown to grey or purplish. Vegetative internodes (1–)3–15(–20) mm long. Stem pubescence bifarious to uniform, eglandular pubescent. Leaves decussate or subdistichous, erecto-patent to recurved. Lamina rarely linear or ovate or oblong or elliptic or orbicular or deltoid or rhomboid, (3–)4–10(–15) × (2–)3–8(–10) mm. Adaxial surface of leaves green or bronze green or yellowish green or dark green, dull. Abaxial surface of leaves green or pale green or pinkish, dull. Leaf hairs sparse or absent, along midrib above, uniseriate eglandular. Apex rarely acute or subacute or obtuse or rounded. Base cuneate or truncate. Margin glabrous, crenate or serrate (rarely). Marginal teeth or lobes in 1–3(– 10) pairs. Petiole 1–3 mm long. Inflorescence racemose, unbranched, (5–)7–9(–20) cm long at fruiting, with (3–)6–15 flowers. Indumentum of peduncle, rachis, and pedicels absent to moderately dense. Eglandular hairs of inflorescence antrorse, white. Peduncle (2–)6–12 cm long, glabrous or eglandularpubescent or glandular-pubescent (Nelson); hairs all around peduncle. Rachis (1–)3–5(–10) cm long, eglandular-pubescent or glandular-pubescent, hairs in 1 row above each bract or all around rachis. Bracts alternate (spiralled), subacute, glabrous or glandular ciliate or eglandular ciliate, linear or lanceolate or elliptic or ovate. Bract margins entire. Pedicels erecto-patent at anthesis, incurved at fruiting, (8–) 10–20(–25) mm long, eglandular-pubescent or glandular- pubescent (Nelson); hairs all around pedicel. Flowers: Calyx 4-lobed, 2–4(–4.5) mm long. Calyx lobes elliptic or oblanceolate, acuminate or acute or subacute. Calyx hairs on margins only (abaxial surface glabrous, with minute glandular dots), eglandular or glandular or mixed eglandular and glandular. Calyx lobe margins entire. Corolla white or pale blue or pink at anthesis. Nectar guides evident or obscure or absent, confined to posterior corolla lobe or present on posterior and lateral corolla lobes or present on all corolla lobes. Colour ring and nectar guides magenta or pink or purple or absent. Corolla throat same colour as lobes or yellow. Corolla (8–)9–12(–15) mm diam. Corolla tube 1.5– 2 mm long, 1–1.5 mm wide, hairy inside, hairs short. Corolla lobes glabrous. Posterior corolla lobe circular, obtuse or emarginate or divided in two, (3.5–)4– 6 × (3–)4–6 mm. Lateral corolla lobes circular, obtuse, longitudinally folded around stamens, (4.5–) 5–7 × (4–)5–7 mm. Anterior corolla lobe elliptic to oblong, obtuse, (3.5–)4.5–6 × (1.5–)1.8–2.5 mm. Stamen filaments white, (2.5–)3–3.5(–4) mm long, narrowed at base. Anthers white or pink, 1–1.5 mm long. Nectarial disc ciliolate. Ovary ovoid or ellipsoid, obtuse, glabrous, 1–1.3 mm long. Style (3–) 3.5–4.5(–5) mm long. Stigma 0.2–0.3 mm wide. Capsules xerochastic, broadly angustiseptate (i.e., weakly flattened), emarginate, 3–4(–5) × 3–3.5(–4) mm, 1.5–2 mm thick, glabrous. Septicidal split of capsule extending to base. Loculicidal split of capsule extending 1⁄4 way to base. Seeds approx. 20–30 per locule, strongly flattened, smooth-surfaced, ellipsoid or obovoid, pale brown to dark brown, 0.6– 0.8 × 0.5–0.6 mm.
Taxonomic concepts
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Parahebe lyallii (Hook.f.) W.R.B.Oliv.
Collections
Identification keys
Metadata
d9f91a4c-c69a-47a3-a69f-6098900e3589
scientific name
Names_Plants
1 January 2000
5 January 2023