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FOC | Family List | FOC Vol. 18 | Scrophulariaceae

58. Pterygiella Oliver in W. J. Hooker, Icon. Pl. 25: t. 2463. 1896.

翅茎草属 chi jing cao shu

Herbs, or shrubs, annual or perennial, erect, sometimes with long rhizomes. Stems basally woody, narrowly 4-winged or terete and wingless. Leaves opposite, decussate, sessile or subsessile; leaf blade mostly lanceolate, margin entire or serrate. Racemes terminal; bracts foliaceous. Flowers opposite, few. Pedicel short. Bracteoles 2, at pedicel apex. Calyx tube broadly campanulate, 5-veined, somewhat 2-lipped; lobes 5, 2 upper lobes shorter than other lobes, margin entire. Corolla 2-lipped, slightly longer than calyx; tube funnelform; lower lip usually nearly as long as upper, 3-lobed, lobes subequal, with 2 raised folds; upper lip 2-lobed, lobes arched, recurved at margin. Stamens didynamous; filaments inserted below middle of corolla tube; anthers 2-loculed, dorsifixed; anther locules parallel, longitudinally dehiscent, densely white villous. Ovary usually ovoid, 2-loculed, densely hirsute. Style densely villous; stigma 2-lobed. Capsule black-brown. Seeds numerous, small; seed coat scrobiculate-reticulate or seed enclosed in large bladdery loose hyaline reticulated appendage.

* Five species: endemic to China.

1 Shrubs, ca. 100 cm tall   5 Pterygiella suffruticosa
+ Herbs, 14-60 cm tall.   (2)
2 (1) Leaves orbicular-ovate, margin subentire to serrate; seeds 1-1.2 mm, enclosed in a bladdery loose hyaline reticulate appendage; corolla dark brown   4 Pterygiella bartschioides
+ Leaves often linear, sometimes lanceolate to narrowly lanceolate, margin entire to rarely subundulate; seeds usually less than 0.5 mm, without a reticulate appendage; corolla yellow.   (3)
3 (2) Stems terete, wingless; leaves 3-veined   3 Pterygiella cylindrica
+ Stems quadrangular, winged along ribs; leaves 1-veined.   (4)
4 (3) Leaf blade densely glandular pubescent, apex obtuse or subacute; corolla 1.6-1.8 cm   1 Pterygiella nigrescens
+ Leaf blade subglabrous to sparsely pubescent, apex narrowly acute; corolla 1.4-1.6 cm   2 Pterygiella duclouxii

Lower Taxa


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