منابع مشابه
Lysimachia huangsangensis (Primulaceae), a New Species from Hunan, China
A new species, Lysimachia huangsangensis (Primulaceae), from Hunan, China is described and illustrated. The new species is closely related to L. carinata because of the crested calyx, but differs in the leaf blades that are ovate to elliptic and (3-)4.5-9 × 2-3.4 cm, 2-5-flowered racemes, and the calyx lobes that are ovate-lanceolate and 5-6 × 3-4 mm. The systematic placement and conservation s...
متن کاملNectar robbers pollinate flowers with sexual organs hidden within corollas in distylous Primula secundiflora (Primulaceae).
Nectar robbers are thought rarely to pollinate flowers, especially those with sexual organs hidden within corollas. In this study, we examined whether robbers pollinate flowers of distylous Primula secundiflora. Distylous plants have two floral morphs. Pin flowers have long styles and short stamens, and thrum flowers have short styles and long stamens. Flowers of P. secundiflora were commonly r...
متن کاملPhytotoxicity of leaf aqueous extract of Rapanea umbellata (Mart.) Mez (Primulaceae) on weeds
Allelopathic substances can be used to develop weed control alternatives based on natural products. The objective of this study was to compare the phytotoxic activity of aqueous leaf extracts of Rapanea umbellata with the toxicity of a synthetic herbicide on the germination and growth of weed species. The weeds species barnyard grass (Echinochloa crus-galli), wild poinsettia (Euphorbia heteroph...
متن کاملConservation of Endangered Species: Androsace mathildae Levier (Primulaceae) in Central Italy
Climate change influences the distribution of species, causing the displacement of distribution areas, both in altitude and latitude. The potentially most climate change-susceptible taxa are those of mountain peaks, with limited distribution areas, such as rare or endemic species. In this paper, we deepened the study of Androsace mathildae Levier, a plant that lives in Central Italy over 2500 m...
متن کاملDevelopment of 13 microsatellite markers in the endangered Sinai primrose (Primula boveana, Primulaceae)1
UNLABELLED PREMISE OF THE STUDY We developed microsatellite markers for the endangered plant Primula boveana, the Sinai primrose, and assessed the cross-transferability of these markers to six related taxa. • METHODS AND RESULTS DNA sequences containing microsatellites were isolated from a microsatellite-enriched library. We obtained successful amplification of 13 microsatellite primer pai...
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ژورنال
عنوان ژورنال: Review of Palaeobotany and Palynology
سال: 1974
ISSN: 0034-6667
DOI: 10.1016/0034-6667(74)90037-2