Lomatogonium gaurgopalii sp. nov., a new species of Gentianaceae from Sikkim Himalaya, is describ... more Lomatogonium gaurgopalii sp. nov., a new species of Gentianaceae from Sikkim Himalaya, is described and illustrated. It can be distinguished from its morphologically closest relative, Lomatogonium cherukurianum S.K.Dey & D.Maity, mainly by its robust habit, longer internodes, much larger creamy yellow flower and much larger floral parts; the presence of many hairs in an inverted semilunar arrangement behind the filament bases; and its larger, narrowly ovoid to narrowly ellipsoid ovary. Lomatogonium gaurgopalii is also unique in having pollen grains with striate-reticulate exine ornamentation without perforations.
A new species, Gentiana arunii D.Maity, S.K.Dey, J.Ghosh & Midday, from alpine pasture in Sikkim ... more A new species, Gentiana arunii D.Maity, S.K.Dey, J.Ghosh & Midday, from alpine pasture in Sikkim Himalaya is described and illustrated, and placed in Gentiana section Chondrophyllae Bunge. The new species is compared morphologically with two related taxa, Gentiana glabriuscula T.N.Ho and Gentiana pluviarum W.W.Sm. subsp. subtilis (Harry Sm.) T.N.Ho.
The traditional use of a Solanaceous plant, Mandragora caulescens C. B. Clarke, as medicine by th... more The traditional use of a Solanaceous plant, Mandragora caulescens C. B. Clarke, as medicine by the tribal communities of Sikkim is reported. The chemical constituents of the plant are also highlighted. In addition, the medicinal uses of its sister member, M. officinarum have also been mentioned. The scientific exploitation of M. caulescens through proper bioprospecting is highly recommended.
FIGURE 3. Saxifraga umbellulata var. umbellulata: A: habit (note both eciliate and setose ciliate... more FIGURE 3. Saxifraga umbellulata var. umbellulata: A: habit (note both eciliate and setose ciliate leaves in basal rosette); B: sepal; C–D: petals (spots marked with arrow); E: stamens; F: gynoecium; G: plant architecture in S. umbellulata; H: plant architecture in S. pasumensis. (A–F: drawing from Midday, Ghosh & Maity 22522).
FIGURE 1. Distribution of studied taxa: A: Saxifraga umbellulata var. umbellulata, B: Saxifraga u... more FIGURE 1. Distribution of studied taxa: A: Saxifraga umbellulata var. umbellulata, B: Saxifraga umbellulata var. pectinata, C: Saxifraga pasumensis
FIGURE 2. Saxifraga umbellulata var. umbellulata: A: habit; B: basal leaf rosette of an individua... more FIGURE 2. Saxifraga umbellulata var. umbellulata: A: habit; B: basal leaf rosette of an individual; C: flower; D: basal leaf rosettes of a population; eciliate and sparsely ciliate leaves marked with yellow arrow.
Allium sikkimense Baker(Alliaceae), wild garlic is used as a substitute for commercial garlic (Al... more Allium sikkimense Baker(Alliaceae), wild garlic is used as a substitute for commercial garlic (Allium sativum L.) by the Lachenpa community of Thangu–Lachen regions of North Sikkim. Traditionally, it is used in the treatment of common cold and cough, diarrhea, gastritis, in breathing problems, to cure body pain and to keep the body warm in severe cold. The traditional, as well as non-conventional uses of this species, are reported here. The exploitation of this species through bioprospecting for sustainable development is recommended. Conservation measures to save this rare Allium in its natural habitat are highlighted.
Saxifraga umbellulata Hook & Thomson (1857:71), an Eastern Himalayan member of the genus Saxifrag... more Saxifraga umbellulata Hook & Thomson (1857:71), an Eastern Himalayan member of the genus Saxifraga Linnaeus (1753:398) (Saxifragaceae) was described based on specimens collected from the Sikkim Himalaya. The species was characterized by having a brown, densely glandular stem; many basal, very thick, fleshy (leathery), glabrous or sparsely setose-ciliate leaves, forming a rosette; few to several, erect, yellow flowers in a terminal subumbellate inflorescence. At present, the species is distributed in Nepal, India (Sikkim), Bhutan and China (Tibet) (Pan et al. 2001, Maity et al. 2018). Later Marquand and Airy Shaw described S. umbellulata f. pectinata Marquand & Airy Shaw in Marquand (1929:183) (Fig. 1) based on a few specimens, collected by F. Kingdon Ward from Pasum Lake in Tibet (Xizang), China, with cartilaginous setose-ciliate margin of basal leaves and yellow flowers. Pan (1992) raised this taxon to the rank of variety as S. umbellulata var. pectinata (C.Marquand & Airy Shaw) Pa...
Sinopodophyllum hexandrum (Royle) T.S.Ying subsp. ramgopalii D. Maity, J. Ghosh & Midday, a n... more Sinopodophyllum hexandrum (Royle) T.S.Ying subsp. ramgopalii D. Maity, J. Ghosh & Midday, a new subspecies from the Sikkim Himalaya is described and illustrated. It is distinguished from S. hexandrum subsp. hexandrum e.g. by densely ciliate petal margins, longer filaments and shorter styles. A detailed description, illustration, field images and information on habitat ecology and phenology are provided.
Lomatogonium gaurgopalii sp. nov., a new species of Gentianaceae from Sikkim Himalaya, is describ... more Lomatogonium gaurgopalii sp. nov., a new species of Gentianaceae from Sikkim Himalaya, is described and illustrated. It can be distinguished from its morphologically closest relative, Lomatogonium cherukurianum S.K.Dey & D.Maity, mainly by its robust habit, longer internodes, much larger creamy yellow flower and much larger floral parts; the presence of many hairs in an inverted semilunar arrangement behind the filament bases; and its larger, narrowly ovoid to narrowly ellipsoid ovary. Lomatogonium gaurgopalii is also unique in having pollen grains with striate-reticulate exine ornamentation without perforations.
Lomatogonium gaurgopalii sp. nov., a new species of Gentianaceae from Sikkim Himalaya, is describ... more Lomatogonium gaurgopalii sp. nov., a new species of Gentianaceae from Sikkim Himalaya, is described and illustrated. It can be distinguished from its morphologically closest relative, Lomatogonium cherukurianum S.K.Dey & D.Maity, mainly by its robust habit, longer internodes, much larger creamy yellow flower and much larger floral parts; the presence of many hairs in an inverted semilunar arrangement behind the filament bases; and its larger, narrowly ovoid to narrowly ellipsoid ovary. Lomatogonium gaurgopalii is also unique in having pollen grains with striate-reticulate exine ornamentation without perforations.
A new species, Gentiana arunii D.Maity, S.K.Dey, J.Ghosh & Midday, from alpine pasture in Sikkim ... more A new species, Gentiana arunii D.Maity, S.K.Dey, J.Ghosh & Midday, from alpine pasture in Sikkim Himalaya is described and illustrated, and placed in Gentiana section Chondrophyllae Bunge. The new species is compared morphologically with two related taxa, Gentiana glabriuscula T.N.Ho and Gentiana pluviarum W.W.Sm. subsp. subtilis (Harry Sm.) T.N.Ho.
The traditional use of a Solanaceous plant, Mandragora caulescens C. B. Clarke, as medicine by th... more The traditional use of a Solanaceous plant, Mandragora caulescens C. B. Clarke, as medicine by the tribal communities of Sikkim is reported. The chemical constituents of the plant are also highlighted. In addition, the medicinal uses of its sister member, M. officinarum have also been mentioned. The scientific exploitation of M. caulescens through proper bioprospecting is highly recommended.
FIGURE 3. Saxifraga umbellulata var. umbellulata: A: habit (note both eciliate and setose ciliate... more FIGURE 3. Saxifraga umbellulata var. umbellulata: A: habit (note both eciliate and setose ciliate leaves in basal rosette); B: sepal; C–D: petals (spots marked with arrow); E: stamens; F: gynoecium; G: plant architecture in S. umbellulata; H: plant architecture in S. pasumensis. (A–F: drawing from Midday, Ghosh & Maity 22522).
FIGURE 1. Distribution of studied taxa: A: Saxifraga umbellulata var. umbellulata, B: Saxifraga u... more FIGURE 1. Distribution of studied taxa: A: Saxifraga umbellulata var. umbellulata, B: Saxifraga umbellulata var. pectinata, C: Saxifraga pasumensis
FIGURE 2. Saxifraga umbellulata var. umbellulata: A: habit; B: basal leaf rosette of an individua... more FIGURE 2. Saxifraga umbellulata var. umbellulata: A: habit; B: basal leaf rosette of an individual; C: flower; D: basal leaf rosettes of a population; eciliate and sparsely ciliate leaves marked with yellow arrow.
Allium sikkimense Baker(Alliaceae), wild garlic is used as a substitute for commercial garlic (Al... more Allium sikkimense Baker(Alliaceae), wild garlic is used as a substitute for commercial garlic (Allium sativum L.) by the Lachenpa community of Thangu–Lachen regions of North Sikkim. Traditionally, it is used in the treatment of common cold and cough, diarrhea, gastritis, in breathing problems, to cure body pain and to keep the body warm in severe cold. The traditional, as well as non-conventional uses of this species, are reported here. The exploitation of this species through bioprospecting for sustainable development is recommended. Conservation measures to save this rare Allium in its natural habitat are highlighted.
Saxifraga umbellulata Hook & Thomson (1857:71), an Eastern Himalayan member of the genus Saxifrag... more Saxifraga umbellulata Hook & Thomson (1857:71), an Eastern Himalayan member of the genus Saxifraga Linnaeus (1753:398) (Saxifragaceae) was described based on specimens collected from the Sikkim Himalaya. The species was characterized by having a brown, densely glandular stem; many basal, very thick, fleshy (leathery), glabrous or sparsely setose-ciliate leaves, forming a rosette; few to several, erect, yellow flowers in a terminal subumbellate inflorescence. At present, the species is distributed in Nepal, India (Sikkim), Bhutan and China (Tibet) (Pan et al. 2001, Maity et al. 2018). Later Marquand and Airy Shaw described S. umbellulata f. pectinata Marquand & Airy Shaw in Marquand (1929:183) (Fig. 1) based on a few specimens, collected by F. Kingdon Ward from Pasum Lake in Tibet (Xizang), China, with cartilaginous setose-ciliate margin of basal leaves and yellow flowers. Pan (1992) raised this taxon to the rank of variety as S. umbellulata var. pectinata (C.Marquand & Airy Shaw) Pa...
Sinopodophyllum hexandrum (Royle) T.S.Ying subsp. ramgopalii D. Maity, J. Ghosh & Midday, a n... more Sinopodophyllum hexandrum (Royle) T.S.Ying subsp. ramgopalii D. Maity, J. Ghosh & Midday, a new subspecies from the Sikkim Himalaya is described and illustrated. It is distinguished from S. hexandrum subsp. hexandrum e.g. by densely ciliate petal margins, longer filaments and shorter styles. A detailed description, illustration, field images and information on habitat ecology and phenology are provided.
Lomatogonium gaurgopalii sp. nov., a new species of Gentianaceae from Sikkim Himalaya, is describ... more Lomatogonium gaurgopalii sp. nov., a new species of Gentianaceae from Sikkim Himalaya, is described and illustrated. It can be distinguished from its morphologically closest relative, Lomatogonium cherukurianum S.K.Dey & D.Maity, mainly by its robust habit, longer internodes, much larger creamy yellow flower and much larger floral parts; the presence of many hairs in an inverted semilunar arrangement behind the filament bases; and its larger, narrowly ovoid to narrowly ellipsoid ovary. Lomatogonium gaurgopalii is also unique in having pollen grains with striate-reticulate exine ornamentation without perforations.
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