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49. Melampyrum Linnaeus, Sp. Pl. 2: 605. 1753.

山罗花属 shan luo hua shu

Chingyungia T. M. Ai.

Herbs, annual, hemiparasitic. Leaves opposite, entire. Flowers solitary in axils of bracts or congregated into racemes or spikes; bracts leaflike in shape, margin often with pointed or setose teeth, rarely entire. Calyx campanulate; lobes 4, upper 2 larger than lower. Corolla tube tubular, gradually expanded upward; limb dilated, 2-lipped; lower lip patent, base 2-plicate, apex 3-lobed; upper lip galeate, compressed, slightly shorter than upper lip, margin revolute, apex obtuse. Stamens 4, didynamous, enclosed by galea; anthers connivent, locules equal in size and base conically pointed, bearded along slit after dehiscence. Ovules 2 per locule. Stigma capitate, entire. Capsule ovoid, slightly compressed, straight or oblique, loculicidal, apex obtuse or tapered. Seeds 1-4, oblong, large, smooth.

About 20 species: Northern hemisphere; three species in China.

Melampyrum taxonomy is quite complex, and the number of recognized species varies with authors. There is a great deal of variation in certain characters, particularly in bract morphology. Chinese plants were once classified into 8 species, which are here treated as 2, in addition to 1 newly recorded species.

1 Corolla yellowish white with orange on sides; corolla tube 3-4 X as long as limb; bracts ovate-orbicular to cordate-ovate, apex rounded; calyx lobes lanceolate to ovate   2 Melampyrum laxum
+ Corolla purple to red with white on sides; corolla tube ca. 2 X as long as limb; bracts linear-lanceolate to ovate, apex slightly obtuse, acute, or acuminate; calyx lobes lanceolate, subulate-triangular, or triangular.   (2)
2 (1) Bracts linear-lanceolate, often entire, sometimes 1- or 2-toothed; calyx lobes narrowly triangular to subulate-triangular; corolla 1.2-1.6 cm   3 Melampyrum klebelsbergianum
+ Bracts lanceolate to ovate, usually with awn-shaped or setoselike teeth; calyx lobes lanceolate; corolla 1.5-2 cm   1 Melampyrum roseum

Lower Taxa


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