Styloglossum formosanum var. actinomorphum

輻形根節蘭

endemic

Styloglossum formosanum (Rolfe) T.P. Lin var. actinomorphum (Fukuy.) T.P. Lin

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

同發表文獻

Calanthe actinomorpha Fukuy.

Fukuy., The Botanical magazine, Tokyo 49: 668. 1935. (Bot. Mag. Tokyo)
Phaius actinomorphus (Fukuy.) T. P. Lin

Lin, Native Orchids of Taiwan 1: 224. 1975. (Native Orch. Taiwan)
Calanthe lyroglossa Rchb. f. var. actinomorpha (Fukuy.) P.J. Cribb & D.A. Clayton

Cribb & Clayton, The Genus Calanthe 85. 2013.
Styloglossum lyroglossum (Rchb.f.) T. Yukawa & P.J. Cribb var. actinomorphum (Fukuy.) T. Yukawa & P.J. Cribb

Yukawa & Cribb, Bull. Natl. Mus. Nat. Sci., Ser. B 40(4): 149. 2014.
Styloglossum formosanum (Rolfe) T.P. Lin var. actinomorphum (Fukuy.) T.P. Lin

Lin et al., Taiwania 61(2): 118. 2016.

herb

Plants 40-60 cm tall. Rhizomes short, rigid, densely rooting. Pseudobulbs erect, short clavate, 4-5 cm tall, 5-7 nodose.
Leaves 3 or 4, basal, erect-spreading, oblanceolate, 30-55 cm long, 3-8 cm wide, apex acuminate, base decurrent, glabrous, 5-nerved; petiole 10-20 cm long, sheathing at base.
Scapes erect, glabrous, 40-60 cm long; rachis 10-15 cm long, more or less densely flowered; bracts caducous, whitish, lanceolate, 3-4 cm long, acuminate, membranaceous, much exceeding flowers. Flowers yellowish, not spreading; pedicel and ovary 1.5 cm long, clavate, glabrous; sepals nearly equal, oblongligulate, 8-10 mm long, 3.5-4 mm wide, acute or apiculate at apex, 3-5-nerved; petals elliptic, as long as sepals or nearly so, acute at apex, contracted at base, 3-nerved; lip entire, spurless, similar to petals, concave, more or less undulate-involute, 3-nerved, glabrous, apex truncate, mucronate; column erect, subterete, 4-5 mm long; anther cap circular; pollinia whitish yellow, 1.5 mm long; stigma terminal, under anther; rostellum absent.