Asperula

Asperula, commonly known as woodruff, is a genus of flowering plants in the family Rubiaceae. It contains 91 species and has a wide distribution area from Europe, northern Africa, temperate and subtropical Asia to Australasia.

==Species== These species are recognised in the genus Asperula: Asperula acuminata Asperula albiflora Asperula ambleia Asperula anatolica Asperula apuana Asperula arvensis - blue woodruff Asperula assamica Asperula asterocephala Asperula asthenes - trailing woodruff Asperula azerbaidjanica Asperula badachschenica Asperula balchanica Asperula bargyli Asperula botschantzevii Asperula brachyantha Asperula cankiriensis Asperula charophyton - strapleaf woodruff Asperula ciliatula Asperula cilicia Asperula comosa Asperula conferta - common woodruff Asperula congesta Asperula crassula Asperula cunninghamii - twining woodruff Asperula cymulosa Asperula czukavinae Asperula dasyantha Asperula euryphylla Asperula fedtschenkoi Asperula fidanii Asperula fragillima Asperula friabilis Asperula galioides Asperula gemella - twin-leaved bedstraw Asperula geminifolia Asperula glabrata Asperula glomerata Asperula gobica Asperula gobicola Asperula gracilis Asperula gunnii - mountain woodruff Asperula hoskingii Asperula insignis Asperula insolita Asperula involucrata Asperula karategini Asperula kotschyana Asperula kovalevskiana Asperula kryloviana Asperula laevigata Asperula lasiantha - Korean woodruff Asperula libanotica Asperula majoriflora Asperula minima Asperula molluginoides Asperula nuratensis Asperula oblanceolata Asperula oppositifolia Asperula orientalis - blue woodruff Asperula pauciflora Asperula perpusilla Asperula podlechii Asperula polymera Asperula popovii Asperula × portae Asperula prostrata Asperula pugionifolia Asperula pulchella Asperula pusilla - alpine woodruff Asperula rechingeri Asperula rezaiyensis Asperula scabrella Asperula scoparia - prickly woodruff Asperula seticornis Asperula setosa Asperula sherardioides Asperula sordide-rosea Asperula strishovae Asperula suavis Asperula subsimplex Asperula subulifolia Asperula syrticola Asperula szovitsii Asperula taurina - pink woodruff Asperula taygetea Asperula tenuissima Asperula tetraphylla Asperula tinctoria - Dyer's woodruff Asperula trichodes Asperula trifida Asperula tschernevae Asperula tymphaea Asperula virgata – rod-shaped woodruff Asperula wimmeriana Asperula xylorrhiza