were isolated from the roots of Verbascum lasianthum Boiss. ex Bentham. In addition, 2 phenylethanoid glycosides, verbascoside {=acteoside, [β-(3,4-dihydroxyphenyl)-ethyl]-(3′-O-α-L-rhamnopyranosyl)-(4′ O-caffeoyl)-β-D-glucopyranoside} (4) and poliumoside {= [β-(3,4-dihydroxyphenyl)-ethyl]-(3′,6′-O-αL-dirhamnopyranosyl)-(4′ -O-caffeoyl)-β-D-glucopyranoside} (5), were also isolated. The structur...

Studies were conducted on three herbaceous plant species growing in naturally high solar UV environments in the subalpine of Mauna Kea, Hawaii, USA, to determine if diurnal changes in epidermal UV transmittance (T(UV)) occur in these species, and to test whether manipulation of the solar radiation regime could alter these diurnal patterns. Additional field studies were conducted at Logan, Utah,...

New nothospecific names were created for six Verbascum hybrids which previously described by Murbeck without binomials: ?ipecensis (V. baldaccii ? V. phlomoides), ?krusevacense abietinum ?lundense herzogii leucophyllum), ?petrovicii heuffelii speciosum), ?soskae pulverulentum), ?soskicii longifolium var. pannosum nicolai).

Background and objectives: The genus Verbascum, with nearly 360 species, is one of the largest members of Schrophulariacea family. In the Flora of Iran, the genus Verbascum is represented by 43 species among them seventeen plants are endemic. Verbascum species are well known in folk medicine and are widely used for therapeutic purposes. Verbascum sublobatum M...

Summary A new species of Rhabdotosperma (Scrophulariaceae) is described from southwestern Saudi Arabia. For 75 years, the was confused with R. bottae and Verbascum melhanense . The illustrated information on identification, distribution, specimens examined, habitat, conservation status, phenology, etymology, taxonomic notes.