A biennial herb; stolons stout, short; stems solitary or tufted, glabrous, slightly fleshy ascending or erect, 10-40 cm high, stout, terete, often with short branches above, covered with minutely glandular hairs. Leaves slightly fleshy, sessile or subsessile, obovate or spatulate, 2-7 cm long, 1-2 cm wide, obtuse to acute at apex, attenuate at base, with black glands, the margin entire. Racemes erect, terminal often compound-paniculate, many-flowered, 4-12 cm long; pedicels 5-25 mm long, about as long as the leaf-like bracts. Flowers white to pinkish, 10-12 mm across; calyx segments oblong, obtuse, minutely toothed at apex; corolla lobes narrowly obovate. Capsules brown, globose, 4-6 mm in diameter, the stigma persistent. Flowers: Mar.-Jun.

TAIPEI: Shihmen, Ho 255; Sanchih, Chaw 324. KEELUNG: Hopingdao, Peng 4380; Keelungyu, Peng 14152. ILAN: Tali, Yang 2738; Is. Kueishan, Hsu 7232. PENGHU: Huang & Kao 6880; Paisha, Leu 2079. PINGTUNG: Shialuochiu, Peng 12627, Oluanpi, Peng 12556. TAITUNG: Sanhsientai, Ho 255. Lanyu Is, Kao 1132; Lutao, Peng 7600.

Distributed in India, Japan, Korea, the Ryukyus, Pacific Islands, and China. Along the rock crevices, beaches in coastal regions in the northern and southern part of the island and on the Lutao and Lanyu islands.

Phenology: biennial

Life form: herb

Root: rooting at node or not: not rooting at node

Stem: present

Stem: type: erect

Stem: shape: terete

Stem: indumentum: minute glandular hairs

Leaf: position: cauline

Phyllotaxy: alternate

Leaf: petiole: sessile

Leaf: blade shape: spatulate

Leaf: blade apex: obtuse, acute

Leaf: blade base: attenuate

Leaf: blade margin: entire

Leaf: blade surface: dotted

Leaf: blade texture: fleshy

Leaf: blade length (mm): 20-70

Leaf: blade width (mm): 10-20

Inflorescence: raceme

Inflorescence: position: terminal

Scape: absent

Peduncle: length (mm): 5-25

Bract: absent

Calyx: shape: 5-parted

Sepal: shape: oblong

Sepal: length (mm): 4-5

Sepal: width (mm): 2-2.5

Corolla: color: white, pinkish

Corolla: shape: rotate

Lobe: margin: minutely toothed

Lobe: length (mm): 5-6

Lobe: width (mm): 2-3

Filament fused into a ring or not: filament fuse to a ring

Filament inserted position: base of corolla lobe

Filament: indumentum: glabrous

Filament and anther relative length: filament about equal to anther

Stamens protruding from corolla or not: Stamens protuding from corolla

Capsule: dehiscence type: longitudinal

Distribution: seashores