Botanical name: Centranthera grandiflora Family: Orobanchaceae (Broomrape family)
Synonyms: Centranthera maxima, Razumovia grandiflora
Large Spur-Anther Flower is a herb, 50-80 cm tall. Stems stout, erect, round or somewhat 4-angled, hairy, apically channeled, simple or apically sparsely branched. Leaves are opposite below, rarely apically alternate, stalkless, elliptic, 2-5 X 1-2.6 cm, margin somewhat curled, sparsely sawtoothed, 3-5-toothed or -lobed, with pustulose or circular scalelike-based setae, below with 3 longitudinal, coarsely bulging, and subparallel veins. Flower-stalks are 4-6 mm, bristlyulous. Bracteoles inserted at base of flower-stalk, subulate, 4-5 mm, bristlyulous. Calyx ovate, 1.4-2 X about 1 cm, bristlyulous, tip constricted into a point about 2 mm, slightly bowed. Flowers are yellow, 3.5-4.3 cm. Large Spur-Anther Flower is found in trailsides, open fields, at altitudes of 800 m, in China Bhutan, India, Myanmar, Nepal, Sikkim, Vietnam. Flowering: July-September.
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The flower labeled Large Spur-Anther Flower is ...