The morphological characteristics of cassia twig
Morphological characteristics
Medium arbor; bark grayish brown, old bark 13mm thick.
The annual branches are cylindrical, dark brown, with longitudinal pinstripes, slightly pubescent, 4-year prism-shaped, yellow-brown, longitudinally finely striped, densely grayish-yellow.
The apical buds are small, the buds are broadly ovate, apexes acuminate, densely grayish yellow short-villus.
Leaves alternate or subopposite, oblong to nearly lanceolate, apex slightly cuspidate, base acute, leathery, margin cartilaginous, involute, green above, glossy, glabrous, below pale green, dusky, Sparsely yellow short-villus, three bases from veins, lateral veins near to opposites, 5–10mm from leaf base, slightly curved upwards and gradually disappeared below leaf ends, apparently conspicuous with midvein above, very prominent below On the side of the leaf margin, there are many branch veins. The branch veins are arched in the leaf margin. The cross veins are wavy and nearly parallel. The distance is 3~4mm. The top is not obvious, the bottom is convex, and the veins are connected by small veins. Obviously visible; petiole stout, long 1.2 ~ 2cm, flat ventral or slightly lower groove, short yellow hair.
Panicles axillary or subterminal, 8~16cm long, tertiary branches, terminal cymules with 3 flowers, total pedicel length is about half of inflorescence, and the sequence axis is yellow fuzz.
Flowers white, ca. 4.5 mm; pedicels 3–6 mm long, yellowish brown tomentose. Perianth inner and outer surfaces densely yellowish brown short-villi, perianth tube conical, ca. 2 mm, perianth lobes ovate-oblong, subequal, ca. 2.5 mm, 1.5 mm wide, apex obtuse or near-acute .
Fertile stamens 9, filaments puberulent, first and second round stamens ca. 2.3 mm, filaments flattened, approx. 1.4 mm, upper 1/3 broadened, anthers oblong-ovate, ca. 0.9 mm, The apex was truncated, the medicine chamber 4, the chambers were introverted, and the upper chamber was much smaller. The third round stamen was about 2.7 mm long, the filaments were flat, about 1.9 mm long, and there was a pair of round kidney-shaped glands at the upper 1/3. Anthers oval-round oblong, drug room 4, the upper 2 rooms smaller, lateral to the next 2 rooms larger, outward.
Staminodes 3, located in the innermost round, stalks ca. 2 mm, stalks slender, flattened, 1.3 mm long, pubescent, apex triangular in apex.
Ovary ovoid, ca. 1.7 mm, glabrous, style slender, as long as ovary, stigma small, inconspicuous. Fruit oval, about 1cm long, 7~8(9) mm wide, dark purple when ripe, glabrous; fruit tray shallow cup-shaped, 4mm long, apically broadened to 7mm, margin truncate or slightly dentate.
Flowering from June to August, fruiting period from October to December.
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