Anthoxanthum
Anthoxanthum, commonly known as hornworts, vernal grasses, or vernalgrasses, is a genus of plants in the grass family. The generic name means 'yellow flower' in Botanical Latin, referring to the colour of the mature spikelets.
The members of Anthoxanthum are widespread in temperate and subtropical parts of Africa and Eurasia, with a few species in tropical mountains. Some species have become naturalized in Australia, New Zealand, and the Americas. Anthoxanthum odoratum is a common species of acidic grassland and bogs in northern Europe. All the species reportedly contain the compound coumarin, used medicinally in many countries.
The genus Hierochloe is included in Anthoxanthum by some recent authors. Others, however, continue to treat them as separate genera, and we provisionally treat them as such here pending further research.
; SpeciesAnthoxanthum aethiopicum - EthiopiaAnthoxanthum amarum - Spain, PortugalAnthoxanthum aristatum - Mediterranean and neighboring areas from Madeira and the Canary Islands to the AegeanAnthoxanthum borii - IndiaAnthoxanthum dregeanum - Cape Province of South AfricaAnthoxanthum ecklonii- South Africa, Lesotho, MalawiAnthoxanthum gracile - Mediterranean from Morocco to the AegeanAnthoxanthum hookeri - Guizhou, Sichuan, Tibet, Yunnan, Bhutan, Nepal, Sikkim, Assam, Arunachal Pradesh, MyanmarAnthoxanthum horsfieldii - Southeast Asia, New Guinea, Assam, Taiwan, GuizhouAnthoxanthum japonicum - HonshuAnthoxanthum madagascariense - MadagascarAnthoxanthum nivale - mountains of central Africa Anthoxanthum odoratum - widespread from Iceland to the Canary Islands to Mongolia; naturalized in North and South America, South Africa, Japan, East Asia, and various islandsAnthoxanthum ovatum - Mediterranean from Spain to the AegeanAnthoxanthum pallidum - Sichuan, YunnanAnthoxanthum redolens - Australia, New Guinea, New Zealand, and South AmericaAnthoxanthum sikkimense - Nepal, Yunnan, Sikkim, Bhutan, Arunachal PradeshAnthoxanthum tongo - Cape Province of South Africa
; formerly included
numerous species now considered better suited to other genera. Most important is Hierochloe; others include ''Centotheca Crypsis Dichelachne Dimeria Festuca Perotis Saccharum''