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37. Pseudolysimachion (W. D. J. Koch) Opiz, Seznam. 80. 1852.

穗花属 sui hua shu

Veronica sect. Pseudolysimachia W. D. J. Koch, Syn. Fl. Germ. Helv. 527. 1837.

Herbs, perennial. Roots glabrous. Rhizomes usually long. Stems 1 or cespitose, base sometimes woody. Leaves opposite or whorled, rarely alternate. Inflorescences terminal, dense racemes or spikes; bracts small, narrow. Calyx 4-lobed; lobes subequal. Corolla 4-lobed; tube rarely less than 1/3 of corolla length, villous inside; limb slightly zygomorphic; upper lobe widest. Stamens 2; filaments adnate to posterior part of corolla tube; anther locules apically confluent. Style persistent; stigma capitate. Capsule subglobose, slightly laterally compressed, apex rounded-obtuse and emarginate, loculicidal. Seeds numerous per capsule, flattened, smooth.

About 20 species: Asia, Europe; ten species in China.

1 Leaves all alternate or at least apically on stem (rarely all opposite in P. linariifolium).   (2)
+ Leaves opposite or whorled (sometimes alternate upward in P. incanum).   (3)
2 (1) Stems 1, very rarely 2; rhizomes herbaceous; corolla tube ca. 1/3 of corolla length   1 Pseudolysimachion linariifolium
+ Stems cespitose; rhizomes woody; corolla tube 1/3-1/2 of corolla length   2 Pseudolysimachion pinnatum
3 (1) Pedicel absent or less than 2 mm; ovary and capsule apically hairy.   (4)
+ Pedicel 2 mm or more; ovary and capsule glabrous (ovary sometimes hairy in P. kiusianum).   (6)
4 (3) Stems mostly densely white woolly; corolla lobes ovate to ovate-orbicular   3 Pseudolysimachion incanum
+ Stems mostly villous and green, gray-green, or gray; corolla lobes ovate-lanceolate to lanceolate.   (5)
5 (4) Leaf blade deeply cut to dentate; leaf axils often with sterile branches; calyx lobes glandular ciliate; corolla white, lobes apically slightly thickened and reflexed   4 Pseudolysimachion alatavicum
+ Leaf blade crenate or entire; leaf axils without branches; calyx lobes eglandular ciliate, otherwise often glandular hairy; corolla blue, purple, rarely white, lobes apically not thickened and erect to slightly patent   5 Pseudolysimachion spicatum
6 (3) Leaves sessile, amplexicaul at least basally or to middle of stem; corolla tube less than 1/3 of corolla length.   (7)
+ Leaves petiolate; corolla tube at least 1/3 of corolla length.   (8)
7 (6) Stems usually with white and curly hairs; leaves opposite, petiolate   10 Pseudolysimachion rotundum
+ Stems glabrous or puberulent; leaves alternate, sessile or subsessile   1 Pseudolysimachion linariifolium
8 (6) Leaf margin deeply cut to pinnately parted; corolla white or pink   7 Pseudolysimachion dauricum
+ Leaf margin dentate to double dentate or serrate to double serrate, sometimes deeply serrate; corolla purple to blue.   (9)
9 (8) Stems glabrous or apically very sparsely villous; leaf blade lanceolate; stamens conspicuously exserted   8 Pseudolysimachion longifolium
+ Stems pubescent, sometimes densely so, rarely apically glabrous; leaf blade narrowly oblong, deltoid-ovate, ovate-lanceolate, or elliptic; stamens included.   (10)
10 (9) Lower leaves subsessile; leaf blade narrowly oblong to elliptic   6 Pseudolysimachion spurium
+ Lower leaves petiole 1-2.5 cm; leaf blade deltoid-ovate to ovate-lanceolate   9 Pseudolysimachion kiusianum

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