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FOC | Family List | FOC Vol. 8 | Brassicaceae

64. Solms-laubachia Muschler, Notes Roy. Bot. Gard. Edinburgh. 5: 205. 1912.

丛菔属 cong fu shu

Solms-laubachia eurycarpa

Credit: Harvard University Herbaria

Herbs perennial, sometimes pulvinate, with well-developed, thick caudex covered with petioles of previous years. Trichomes absent or simple. Stems absent or rarely present and few leaved. Basal leaves petiolate, rosulate, simple, entire. Cauline leaves absent, if present then sessile, entire. Flowers solitary on long pedicels originating from center of rosette, rarely in few- to several-flowered, ebracteate racemes elongated slightly in fruit. Fruiting pedicels slender, erect or divaricate. Sepals oblong, free or rarely united, usually persistent, erect, equal, base of lateral pair not saccate, margin not membranous. Petals purple, blue, pink, or white, suborbicular, obovate, spatulate, or oblanceolate, apex obtuse or emarginate; claw subequaling or longer than sepals. Stamens 6; filaments not dilated at base; anthers oblong-linear, obtuse at apex. Nectar glands 2, lateral, often annular; median glands absent. Ovules 5-10 per ovary. Fruit dehiscent siliques or silicles, linear, oblong, ovate, or lanceolate, latiseptate, sessile, readily detached from pedicel; valves papery, reticulate veined, with a prominent midvein and marginal veins, glabrous or pubescent, smooth, margin angled, apex persistently united with replum; replum rounded, concealed by connate valve margin; septum complete or rarely perforated, membranous, translucent; style absent, obsolete, rarely to 1 mm; stigma capitate, entire or slightly 2-lobed, lobes not decurrent. Seeds uniseriate or biseriate, wingless, broadly ovate or suborbicular, flattened; seed coat reticulate, rugose, or papillate, not mucilaginous when wetted; cotyledons accumbent.

Nine species: Bhutan, China, Sikkim; nine species (eight endemic) in China.

1 Flowers in racemes; stems often 1- or 2-leaved; seeds papillate   1 S. platycarpa
+ Flowers solitary from a basal rosette; scapes leafless; seeds rugose or reticulate.   (2)
2 (1) Leaves gray, densely lanate; seeds rugose.   (3)
+ Leaves green, glabrous or pilose; seeds reticulate.   (4)
3 (2) Leaf blade lanceolate- to oblanceolate-linear, rarely oblanceolate, retrorsely lanate, 1.5-5(-7) mm wide; fruit valves obscurely veined   2 S. retropilosa
+ Leaf blade broadly spatulate, oblong, or obovate, spreading or antrorsely lanate, (5-)7-17 mm wide; fruit valves prominently veined   3 S. lanata
4 (2) Leaf blade 0.3-1(-1.5) mm wide, often grooved adaxially, fleshy, filiform to narrowly linear.   (5)
+ Leaf blade (1.5-)2-16(-23) mm wide, not grooved adaxially, not fleshy, variable in shape, never filiform, rarely narrowly linear.   (6)
5 (4) Petioles remaining thickened; longest leaf blades (1.5-)2-4.5(-5.5) cm; fruiting pedicels (1-)1.5-3.5(-4.5) cm; petals (1.5-)1.7-2.2 cm; seeds 2-4 × 2-3 mm   7 S. xerophyta
+ Petioles often becoming papery; longest leaf blades rarely to 1 cm; fruiting pedicels 0.2-0.7(-1) cm; petals 1-1.2 cm; seeds 1-2 mm in diam.   8 S. minor
6 (4) Leaf blade (7-)10-16(-23) mm wide; petiole strongly thickened, subcorky, often purplish   4 S. eurycarpa
+ Leaf blade (1.5-)2-5(-7) mm wide; petiole thin or rarely slightly thickened, papery, often not purplish.   (7)
7 (6) Sepals united, 2.5-3.5 mm; petals white, oblanceolate, 5-6 × 1.5-2 mm   9 S. gamosepala
+ Sepals free, 5-10 mm; petals purple, pink, or deep to turquoise blue, obovate or broadly so, 12-25 × 4-12 mm.   (8)
8 (7) Leaves pilose with straight trichomes; petioles membranous, ciliate; fruit (3-)4.5-6.5(-8) cm; seeds 3.5-5 mm   6 S. linearifolia
+ Leaves glabrous or sparsely pubescent with crisped trichomes; petioles usually slightly thickened, not ciliate; fruit 2.5-3.5(-4.5) cm; seeds 2.5-3.5 mm   5 S. pulcherrima

Lower Taxa


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