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FOC | Family List | FOC Vol. 18 | Scrophulariaceae | Mimulus

5. Mimulus tenellus Bunge, Enum. Pl. China Bor. 49. 1833.

沟酸浆 gou suan jiang

Perennials, to 40 cm tall, glabrous. Stems slender, often diffuse, much branched, basally creeping, quadrangular, narrowly 4-winged or not. Petiole 1-3 cm, slender; leaf blade ovate, ovate-triangular, or ovate-oblong, 1-3 X 0.4-1.5 cm, base truncate, margin sparsely serrate, apex acute; veins pinnate or palmate. Flowers axillary, solitary. Pedicel nearly as long as petiole or whole leaf. Bracteoles absent. Calyx cylindric to broadly campanulate, 5-10 mm or longer, saccate in fruit, sometimes narrowly winged, apex truncate or suboblique; lobes small, spinelike. Corolla yellow, throat with red spots; tube funnelform, 1.5-3 X as long as calyx, densely barbate. Stamens and style glabrous, included. Capsule ellipsoid, slightly shorter than calyx. Seeds ovoid, papillose. Fl. and fr. Jun-Sep.

Beside water, wet places, forests, trailsides; 500-3000 m. Gansu, Guizhou, Hebei, Henan, Hubei, Hunan, Jiangxi, Jilin, Liaoning, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [India (Assam), Japan, Nepal, Sikkim, Vietnam].

The combination Erythranthe tenella (Bunge) G. L. Nesom (Phytoneuron. 2012-39: 40. 2012) appeared after publication of the family treatment for the Flora of China.

1 Calyx cylindric, apex truncate.   (2)
+ Calyx broadly campanulate, apex suboblique.   (3)
2 (1) Stems often diffuse; pedicel shorter than leaves; calyx ca. 5 mm   5a var. tenellus
+ Stems suberect; pedicel as long as whole leaf; calyx ca. 10 mm or longer   5b var. nepalensis
3 (1) Stems not winged; leaves pinnately veined   5c var. procerus
+ Stems winged; leaves palmately veined   5d var. platyphyllus

Lower Taxa


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    Photos by The Biodiversity of the Hengduan Mountains Project  
  • Image File (David Boufford)
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  • Image File (David Boufford)
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