Streptanthus tortuosus is a biennial or short lived perennial plant in the mustard family (Brassicaceae) known by the common names shieldplant,[1]shieldleaf, and mountain jewelflower.[2]
It is native to the mountains of northern and central California, its distribution extending just into Oregon and Nevada. It grows in rocky and sandy areas in forests and woodland habitat.
Growth patternedit
It is highly variable in appearance and some authors divide it into many subtaxa. In general, it is a biennial or perennial herb growing a few centimeters to over a meter tall. It is hairless and often waxy in texture.
Leaves and stemsedit
The basal leaves have oval blades borne on winged petioles, and leaves higher on the stem may be longer and narrower, sometimes clasping the stem at the bases. Leaves turn yellow with age.[2]
Inflorescence and fruitedit
Flowers occur at intervals along the upper stem, and there is usually a leaflike bract below them. Each flower has an urn-shaped calyx of sepals in shades of purple or greenish yellow with four petals emerging from the tip. The fruit is a long, thin, curving silique up to 12 to 16 centimeters long.
Referencesedit
^USDA, NRCS (n.d.). "Streptanthus tortuosus". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 4 December 2015.
streptanthus, tortuosus, biennial, short, lived, perennial, plant, mustard, family, brassicaceae, known, common, names, shieldplant, shieldleaf, mountain, jewelflower, scientific, classificationkingdom, plantaeclade, tracheophytesclade, angiospermsclade, eudic. Streptanthus tortuosus is a biennial or short lived perennial plant in the mustard family Brassicaceae known by the common names shieldplant 1 shieldleaf and mountain jewelflower 2 Streptanthus tortuosusScientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsClade RosidsOrder BrassicalesFamily BrassicaceaeGenus StreptanthusSpecies S tortuosusBinomial nameStreptanthus tortuosusKellogg Contents 1 Range and habitat 2 Growth pattern 3 Leaves and stems 4 Inflorescence and fruit 5 References 6 External linksRange and habitat editIt is native to the mountains of northern and central California its distribution extending just into Oregon and Nevada It grows in rocky and sandy areas in forests and woodland habitat Growth pattern editIt is highly variable in appearance and some authors divide it into many subtaxa In general it is a biennial or perennial herb growing a few centimeters to over a meter tall It is hairless and often waxy in texture Leaves and stems editThe basal leaves have oval blades borne on winged petioles and leaves higher on the stem may be longer and narrower sometimes clasping the stem at the bases Leaves turn yellow with age 2 Inflorescence and fruit editFlowers occur at intervals along the upper stem and there is usually a leaflike bract below them Each flower has an urn shaped calyx of sepals in shades of purple or greenish yellow with four petals emerging from the tip The fruit is a long thin curving silique up to 12 to 16 centimeters long References edit USDA NRCS n d Streptanthus tortuosus The PLANTS Database plants usda gov Greensboro North Carolina National Plant Data Team Retrieved 4 December 2015 a b Sierra Nevada Wildflowers Karen Wiese 2nd Ed 2013 p 30External links edit nbsp Wikimedia Commons has media related to Streptanthus tortuosus Jepson Manual Treatment Photo gallery nbsp This Brassicales article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Streptanthus tortuosus amp oldid 1195209174, wikipedia, wiki, book, books, library,
