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Published In: Species Plantarum 2: 954. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 7/9/2009)
Acceptance : Accepted
Project Data     (Last Modified On 7/22/2009)

 

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4. Sisyrinchium L. (blue-eyed grass)

Plants with fibrous roots, lacking rhizomes. Aerial stems erect or ascending, flattened, usually somewhat winged. Leaves basal or nearly so below the inflorescence, few, linear, the leaf blades flat. Inflorescences 1–4 per aerial stem, sessile or stalked from the axils of leaflike bracts, each with 2–12 flowers enclosed by a pair of spathelike, herbaceous or membranous bracts. Flowers with stalks 8–18 mm long. Perianth 5–12 mm long, spreading, white to blue or purple, rarely light yellow, usually with a well-developed white or light yellow “eye” at the base, the sepals and petals similar and fused at the bases, oblanceolate with the tips abruptly narrowed into an attenuate tip, sometimes with the attenuation protruding from an apical notch. Styles with 3 linear lobes. Stamens with the filaments fused to the tips or nearly so. Capsules 2–6 mm long, globose. Seeds black, globose. Sixty to 100 species, North America to South America, with a single circumboreal species also in Europe and Asia.

 

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1 Inflorescences 1–2 per aerial stem, sessile at the tip of the unbranched stem (2)
+ Inflorescences stalked, 1–4 from the axil of each leaflike bract, the aerial stems thus appearing branched (3)
2 (1) Inflorescences mostly 2 per aerial stem, subtended by an extra leaflike bract in addition to the 2 bracts of each spathe 1 Sisyrinchium albidum
+ Inflorescence 1 per aerial stem, without an extra bract subtending the 2 bracts of the spathe 4 Sisyrinchium campestre
3 (1) Outer spathelike bract noticeably longer at flowering time, mostly 1.5–2.0 times as long as the inner bract; aerial stems 2–6 mm wide, often with broad wings 2 Sisyrinchium angustifolium
+ Outer and inner spathelike bracts of similar lengths at flowering time or the outer bract less than 1.5 times as long as the inner bract; aerial stems 1–3 mm wide, usually with narrow wings 3 Sisyrinchium atlanticum
 
 
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