Parahebe canescens (A.Wall) W.R.B.Oliv.
Details
Parahebe canescens (A.Wall) W.R.B.Oliv., Rec. Domin. Mus. 1: 229 (1944)
Nomenclature
(A.Wall) W.R.B.Oliv.
A.Wall
W.R.B.Oliv.
1944
229
ICN
species
Parahebe canescens
Classification
Descriptions
Parahebe canescens (A.Wall) W.R.B.Oliv.
Minute, prostrate, creeping and rooting herb forming grey matted patches 15-20 cm. diam.; stems up to c. 10 cm. long, filiform, much-branched, sparsely white-hairy. Lvs subsessile or shortly petiolate, 1-2.5 × 1-1·5 mm., broad-ovate, obtuse, entire, rather sparsely clad on both surfaces, especially on margins and midribs, in lax flattened white hairs. Fls solitary on axillary white-hairy peduncles ± 2-5 mm. long; bracts 2, lflike; pedicel = or > peduncle, densely white-hairy. Calyx c. 3 mm. long, densely white-hairy; lobes lanceolate-oblong, obtuse, sts a small fifth lobe present. Corolla blue, c. 5-6 mm. long; tube short, broad-funnel-form, < or = calyx; lobes 4, unequal, c. 3-4 × 2.5 mm., obovate-oblong, emarginate. Capsule c. 1·5 × 2 mm., < calyx, broad-obcordate, ± compressed, glab.
Parahebe canescens (A.Wall) W.R.B.Oliv.
2n = 42
2n = 42
Parahebe canescens (A.Wall) W.R.B.Oliv.
Creeping herb (old stems with slight secondary tissue; short shoots with 2(–3) pairs of leaves easily detached and capable of forming new plants), 0.3–1 cm tall. Old stems brown or redbrown. Branches prostrate. Branchlets brown or green. Vegetative internodes 1–5(–15) mm long. Stem pubescence uniform or absent, eglandular pubescent (short curved white hairs). Leaves subdistichous, spreading to recurved. Lamina ovate or obovate or elliptic or orbicular, 1–2.5(–3) × 1– 1.5(–2) mm. Adaxial surface of leaves glaucous, dull. Abaxial surface of leaves glaucous, dull. Leaf hairs scattered, on all parts of leaf (most dense on midline and at apex), uniseriate eglandular. Apex obtuse to rounded. Base cuneate. Margin ciliate, entire. Petiole 0–0.5 mm long. Inflorescence a solitary bibracteolate flower (rarely paired flowers), 0.3– 1.2 cm long at fruiting. Indumentum of peduncle, rachis, and pedicels sparse. Eglandular hairs of inflorescence deflexed (and tangled), white. Peduncle 0.1–0.5 cm long, eglandular-pubescent; hairs all around peduncle. Bracts paired and opposite, obtuse to subacute, eglandular-hairy adaxially and eglandular-hairy abaxially, elliptic or ovate. Bract margins entire. Pedicels suberect at anthesis, straight at fruiting, 2–7 mm long, densely eglandular-pubescent; hairs all around pedicel. Flowers: Calyx 4(–5)- lobed, 2–3.5 mm long. Calyx lobes lanceolate to oblong, subacute to obtuse. Calyx hairs on abaxial surface, eglandular. Calyx lobe margins entire. Corolla pale blue at anthesis (paler abaxially). Nectar guides evident, present on all corolla lobes. Colour ring and nectar guides blue. Corolla throat same colour as lobes. Corolla c. 10 mm diam. Corolla tube 1 mm long, 1–1.5 mm wide, hairy inside, hairs short. Corolla lobes glabrous. Posterior corolla lobe elliptic, subacute to divided in two, 3–6 × 2–3 mm. Lateral corolla lobes elliptic, obtuse, flat, not enfolding stamens, 3–6 × 2–3 mm. Anterior corolla lobe narrowly elliptic, obtuse, 3–6 × 2–2.5 mm. Stamen filaments white, 4–5 mm long, weakly narrowed at base. Anthers mauve or violet, 0.7–1.5 mm long. Nectarial disc glabrous. Ovary ovoid, obtuse, glabrous, 0.8– 1 mm long. Style 4–5.5 mm long. Stigma 0.5 mm wide. Capsules xerochastic, narrowly angustiseptate (i.e., strongly flattened), emarginate, 1–1.5 × 1– 2 mm, c. 0.5 mm thick, glabrous. Septicidal split of capsule extending to base. Loculicidal split of capsule extending 3⁄4 way to base or to base. Seeds approx. 5–35 per locule, strongly flattened, smoothsurfaced, ellipsoid to obovoid, pale brown to brown, c. 0.5 × c. 0.3 mm.
Taxonomic concepts
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Parahebe canescens (A.Wall) W.R.B.Oliv.
Identification keys
Metadata
5a94bba0-8c04-4f42-8738-1173f6b22ba9
scientific name
Names_Plants
1 January 2000
5 January 2023