Acilepis

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Taxonavigation

Ordo: Asterales
Familia: Asteraceae

Name

Acilepis D.Don, Prodr. Fl. Nepal: 169. 1825. – Wikispecies link – IPNI link – Pensoft Profile

• Lysistemma Steetz, Naturw. Reise Mossambique [Peters] 6(Bot., 2): 340. 1864.
• Xipholepis Steetz, Naturw. Reise Mossambique [Peters] 6(Bot., 2): 344. 1864.

Type

Acilepis squarrosa D.Don, Prodr. Fl. Nepal. 169. 1825.
Perennial herbs. Stems acaulescent or caulescent. Leaves simple, alternate or rosulate, petiolate, lamina ovate, obovate or elliptic, pubescent, margin serrate or entire, apex rounded, acute or acuminate, base cuneate or attenuate, subcoriaceous. Capitulescences terminal or axillary, corymbose, paniculate, spiciform, scapose, solitary. Capitula discoid, homogamous, pedunculate or sessile, florets bisexual and fertile. Involucres herbaceous. Florets 6–80; corollas purple to white, actinomorphic, lobes 5. Anthers 5. Styles purple, 2-branched, inner surface covered with stigmatic papillae, outer surface covered with sweeping hairs reaching to below style bifurcation. Achenes subterete or obovate, usually 10-ribbed, carpopodium present. Pappus in 2 series of bristles, persistent, the outer ones are shorter than the inner ones. Pollen lophate, 3-porate, without micropuncta.
Sixteen species are recognized in Thailand.

Key to the species of Acilepis in Thailand

Key to the species of Acilepis in Thailand — S. Bunwong, P. Chantaranothai , S. Keeley

1		Capitula with more than 30 florets    2
–		Capitula with less than 30 florets    6
2		Phyllaries mostly reflexed    3
–		Phyllaries not reflexed    4
3		Leaves basal; corolla and achenes pubescent    Acilepis attenuata
–		Leaves cauline; corollas and achenes without pubescence    Acilepis silhetensis
4		Capitula terminal, pedunculate    5
–		Capitula axillary, sessile    Acilepis squarrosa
5		Phyllaries with dense tomentum; capitula subsessile    Acilepis doichangensis
–		Phyllaries with sparsely arachnoid hairs; peduncles elongate    Acilepis ngaoensis
6		Capitula pedunculate, involucre ≥ 5 mm long    7
–		Capitula subsessile, involucre ≤ 5 mm long    Acilepis divergens
7		Phyllaries herbaceous, apex mucronate or aristate    8
–		Phyllaries scarious, spinose    Acilepis chiangdaoensis
8		Leaves chartaceous; achenes pubescent    9
–		Leaves membranaceous; achenes lacking trichomes    Acilepis peguensis
9		Upper leaves elliptic, acute to acuminate; achenes glandular    10
–		Upper leaves linear-lanceolate to falcate, or caudate; achenes eglandular    Acilepis principis
10		Leaves subsessile or with petioles up to 6 mm long    11
–		Leaves petiolate, petioles up to 25 mm long    13
11		Capitula with ≥ 20 florets, involucres cup-shaped or campanulate    12
–		Capitula with 8–12 florets, involucres narrowly campanulate    Acilepis kingii
12		Herbs 1–2 m tall; leaves 15–20 by 5–8 cm    Acilepis namnaoensis
–		Herbs 0.2–0.4 m tall; leaves 4–6 by 1–2.5    Acilepis kerrii
13		Corolla without hairs; achenes 2–3.5 mm long    14
–		Corolla with sparse hairs; achenes 4–5 mm long    Acilepis saligna
14		Inner pappus 8–9 mm long; involucres 8–10 mm long    15
–		Inner pappus 6–7 mm long; involucres 6–7 mm long    Acilepis virgata
15		Receptacle glabrous    16
–		Receptacle pubescent    Acilepis tonkinensis
16		Phyllaries and peduncles densely villose; pappus 6–7 mm long; anthers purple    Acilepis pseudosutepensis
–		Phyllaries and peduncles sparsely pilose; pappus 8–9 mm long; anthers yellowish    Acilepis sutepensis

Taxon Treatment

• Bunwong, S; Chantaranothai, P; Keeley, S; 2014: Revisions and key to the Vernonieae (Compositae) of Thailand PhytoKeys, 37: 25-101. doi