Laportea fujianensis C. J. Chen

This species superficially resembles the widespread and rather weedy Laportea aestuans, but lacks the glandular hairs characteristic of that species, has smaller stipules, cystoliths arranged along the veins abaxially, and much shorter inflorescences.

Herbs annual, monoecious. Stems often purplish basally, straight, 20-60 cm tall, upper stem not zigzagged, simple or few branched; upper stems and petioles densely armed with short stinging hairs. Stipules deeply 2-cleft, lobes nearly subulate, ca. 2.5 mm, setulose along rib abaxially; petiole 2-7 cm; leaf blade broadly ovate or subcordate, 3.5-7.5 × 2-6 cm, submembranous, 3-veined, lateral basal pair reaching middle margin, lateral veins 4 or 5 each side of midvein, reaching teeth, abaxial surface with dense, short, stinging hairs on veins, adaxial surface with appressed stinging hairs, base abruptly cuneate, truncate, or cordate, margin denticulate, apex acuminate; cystoliths botuliform, regularly arranged abaxially along veins. Male inflorescences in distal axils, paniculate, 1-2 cm; female inflorescences in proximal axils, 2-5 cm, peduncle 0.1-2.5 cm, densely armed with short stinging hairs. Male flowers pedicellate, in bud ca. 1 mm; perianth lobes (4 or)5(or 6), connate at base, obovate, puberulent, apex corniculate; stamens (4 or)5(or 6); rudimentary ovary obovoid, 0.4 mm. Female flowers pedicel slender, to 2-3 mm, not winged; perianth lobes 4, free, unequal, dorsal lobe far from lateral one, concave, ca. 0.2 mm, 2 lateral lobes largest, enclosing the ovary, broadly ovate, ca. 0.4 mm, ventral lobe smallest, narrowly ovate, ca. 1.5 mm. Ovary asymmetrically triangular-ovoid; stigma reflexed, ligulate, ca. 2 mm. Achene obliquely triangular-obovoid, slightly compressed, ca. 0.8 mm in diam., with triangular ridge enclosing a warty depression; persistent lateral perianth lobes forming a small basal cup. Fl. Jul-Aug, fr. Aug-Sep.

S Fujian (Nanjing).

* Disturbed, moist places in forests, streams; ca. 300 m.

Laportea fujianensis là loài thực vật có hoa trong họ Tầm ma. Loài này được C.J. Chen mô tả khoa học đầu tiên năm 1982.

福建红小麻（学名：Laportea fujianensis）是荨麻科艾麻属的植物，是中国的特有植物。分布于中国大陆的福建等地，生长于海拔300米的地区，一般生于山坡宅旁菜地边草地以及水井旁阴湿处，目前尚未由人工引种栽培。