Rosularia marnieri (Raym.-Hamet ex H.Ohba) H.Ohba

Alatanzhula, Yue Xin, Zhao, Liqing, Gundegmaa, Vanjil, Yao, Zhenyu & Ri, Xu, 2025, A new Carex L. variety and ten new records from China and Mongolia, Adansonia (3) 47 (10), pp. 157-170 : 160

Rosularia marnieri (Raym.-Hamet ex H.Ohba) H.Ohba

( Fig. 3 A-E)

Journal of Japanese Botany 52 (1): 7 ( Ohba 1977). — Rosularia alpestris subsp. marnieri (Raym.-Hamet ex H. Ohba) Eggli , Bradleya 6 (Suppl.): 47 ( Eggli 1988). — Sedum marnieri Raym.-Hamet ex H. Ohba , Journal of Japanese Botany 49: 260 ( Ohba 1974).

TYPE MATERIAL. — Nepal • Marsiandi; 11.IX.1950; Lowndes, Donald 1506; iso-, E[E00393031] photo!

ETYMOLOGY. — This specific epithet is named after the French botanist and horticulturist Julien Marnier-Lapostolle.

PHENOLOGY. — Flowering from July to September.

DISTRIBUTION AND HABITAT. — Distributed in India and Nepal on exposed or arid, stony or sandy slopes, and in rock crevices. Rosularia alpestris subsp. marnieri (Raym.-Hamet ex H.Ohba) Eggli was recorded in Xizang, China in 1993 ( GBIF 2024). However, we have not yet found additional sites or specimen records to confirm the presence of this species in the region. This collection of Rosularia marnieri in Xizang provides a basis for further research into the distribution of this species.

ADDITIONAL SPECIMENS EXAMINED. — China • Xizang, Zanda County, On the way from Xiangzi township to Diya township ; 1.IX.2018; L.Q. Zhao X13-073; HIMC[ HIMC0015323 ] ! • Ngari, South Border Crossing , Puran County; 1.IX.2018; L.Q. Zhao X13- 074; HIMC[ HIMC0015324 ] !

India • Ganges Valley , on dry banks; 15.VII.1883; Duthie J.F. 866; BM[ BM 000603561 ] (photo!) .

AFghanistan • Alishang , upper part of Darrah Rastyon; 15.VII.1969; L. Ekberg & Per E.B. Wendelbo 9650; E[E00361487] (photo!) .

TAXONOMIC NOTES

Rosularia marnieri is morphologically similar to R. alpestris (Kar. & Kir.) Boriss. , but can be distinguished by its conspicuously glandular trichome throughout except for stamens and nectar scales (vs stem glabrous), rosette leaves glabrous, not prominently glandular, cauline leaves both surfaces densely glandular (vs hispidulous-ciliate on the margin only at the apex, otherwise glabrous), cauline leaves narrowly lanceolate to narrowly elliptic (vs cauline leaves oblong-lanceolate or oblong), inflorescence compact (vs inflorescence fewflowered), calyx glandular, lobes ovate or triangular-ovate (vs calyx glabrous, lanceolate), petals ovate, apex obtuse or rarely acute, margin minutely erose, ascending at flowering (vs petals recurved and divergent at the apex), hypogynous scales square, apex irregularly lobed (vs hypogynous scales semiorbicular, truneate or rounded at the tip, entire), carpels sparsely papillate (vs carpels glabrous) ( Borisova 1939; Ohba & Rajbhandari 2012).

Figures

FIG. 3. — A-E, Rosularia marnieri (Raym.-Hamet ex H.Ohba) H.Ohba: A, plant specimen;B, stamen; C, D, plant;E, nectar scale; F, G, Carex relaxa Krecz.:F, plant specimen; G, plant. Scale bars: B, 1 mm; E, 0.2 mm.