Rheum alexandrae Rheum alexandrae is a perennial herbaceous plant in the Polygonaceae family. It is naturally distributed in eastern Tibet, northwestern Yunnan and western Sichuan. It is one of the endemic plants in the Hengduan Mountains. Rhubarb bracteolum is solitary or clustered with several plants. It grows on hillside grassland at an altitude of 3000-4500 meters. It is often clustered beside relatively humid alpine streams and alpine rocky beaches. Rhubarb, Latin scientific name: Rheum alexandrae Batal. is a perennial high school herbaceous plant in the Polygonaceae family. It can be up to 80 cm tall, with straight and strong rhizomes and roots. The stems are strong and straight, solitary, unbranched, and often yellow-green. There are many stem leaves and leaf-shaped bracts; the petiole is approximately the same length as the leaf or slightly longer, semi-cylindrical, the stipule sheath is large, brown, and the petiole is short or sessile. Inflorescence branched axillary, erect raceme, glabrous; flowers are small green, several clusters; pedicels are thin and filamentous, smooth and glabrous; perianth bases are combined into cup-shaped, lobes semi-elliptical, and anthers are rectangular-elliptic The flower disk is thin; the ovary is slightly rhomboid obovate, and the fruit is rhomboid-elliptic, dark brown. Smooth, blooming from June to July, fruiting in September.

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拍攝者： Lizlee