Pogostemon fauriei (H. Lév.) Press (1982: 73)

YAO, GANG, DENG, YUN-FEI & GE, XUE-JUN, 2015, A Taxonomic Revision Of Pogostemon (Lamiaceae) From China, Phytotaxa 200 (1), pp. 448-450 : 448-450

20. Pogostemon fauriei (H. Lév.) Press (1982: 73) . Dysophylla fauriei Léveillé (1911: 248) . Type: — KOREA. “In orizetis Quelpaert”, October 1906, A. Faurie 760 (holotype E!).

Annual herbs, 10–40 cm long. Stem weak, erect or procumbent basally, lower internodes very short sometimes, rooting at nodes basally, glabrous. Leaves in whorls of 3–4, sessile; blade linear to linear-lanceolate, 1–3.5 cm × 1.2–6 mm, abaxially inconspicuously glandular, base cuneate, margin obscurely dentate or entire, apex acute, glabrous, lateral vein inconspicuous. Spike terminal, simple, 0.8–2.5 cm × 4–6 mm; flowers subsessile. Bracts and bracteoles lanceolate, linear-lanceolate, or linear, 2.5–3 mm long, purplish, margin ciliate. Calyx campanulate, purplish, 2.5–2.8 mm long in fruit, 5-veined, glabrous or sparsely hairy and glandular outside; teeth 5, triangular, subequal, 2/5–1/2 as long as calyx tube, hairy inside, margin ciliate. Corolla to 3.3 mm long, exserted, 2-lipped, lower lip ca. 1 × 1 mm, upper lip ca. 2 mm across, central lobe ca. 0.6 × 0.5 mm. Stamens 4, exserted; filaments 3.5–3.8 mm long, all inserted at a height of ca. 1.4 mm in the tube, exserted portion ca. 1.9 mm, glabrous at the base; style ca. 4.5 mm long; stigma bifid, lobes equal, ca. 1 mm long. Disc ca. 0.3 mm long. Nutlets 4, ca. 2/ 3 mm long, oblong or obovate, dark brown, reticulate-punctate.

Distribution and habitat:— The species is distributed in NE China and Korea. In China, it occurs in Heilongjiang province ( Figure 13 ). It grows in marsh grounds or rice paddies, at 100–200 m elevation.

Phenology:— Fruiting from September to October.

Taxonomic notes:— Pogostemon faurei was omitted in the Flora Reipublicae Popularis Sinicae ( Wu & Huang 1977) and Flora of China ( Li & Hedge 1994), but recorded in Flora Plantarum Herbacearum Chinae Boreali-Orientalis ( Fu et al. 1981) and Flora of Heilongjiangensis ( Mu & Dong 2001). It is similar to P. stellatus in habit, but differs from the latter by its shorter spikes less than 2 cm long (not 0.5–5 cm), corolla ca. 3 mm long (not 1.5 mm), calyx ca. (2–) 2.5–2.8 mm long (not 1.5 mm) and leaves in whorls of 3–4 (not 4–10).

Figures

FIGURE 13. Distribution maps of Pogostemon falcatus, P. cruciatus, P. fauriei and P. henanensis.