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Published In: Species Plantarum 1: 179. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
Contributor Text: YASIN J. NASIR
General/Distribution: 20 species, often hard to separate; Mediterranean to S.W. & C. Asia, Represented in Pakistan by 4 native species.

 

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Annual, biennial or perennial herbs. Leaves variously lobed. Flowers in cincinni, ± irregular, variously coloured. Calyx enlarging and enclosing the fruit. Corolla infundibuliform, 5-lobed; lobes ± unequal, imbricate in bud. Stamens 5, attached about the middle or at the base of the corolla tube; anthers usually exserted, oblong, dehiscing longitudinally. Ovary bilocular. Style filiform, stigma subcapitate. Capsule (pyxidium) erect, enclosed in the calyx, dehiscence by a lid. Seeds many, compressed.
 

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1 Annual or biennial. Calyx lobes 4-10 mm long, subulate to aristate (2)
+ Perennial. Calyx lobes 2-3 mm long, ± obtuse cuspidate. Seeds 0.9-1.0 mm long 1 Hyoscyamus insanus
2 (1) Biennial, rarely annual. Calyx lobes not reflexed in fruit. Corolla 20-30 mm long, c. twice length of calyx. Seeds pitted or rugose-tuberculate (3)
+ Annual. Calyx lobes reflexed in fruit. Corolla 12-16 mm long, slightly exceeding calyx. Capsule 5-6 mm long. Seeds ruminate-rugose 2 Hyoscyamus pusillus
3 (2) Leaves ovate-oblong. Calyx urceolate (in fruit), less than 1/2 cleft: lobes broad triangular-aristate, 4-6 mm long. Filaments purplish suffused. Seeds ± 1.2 mm long, pitted 3 Hyoscyamus niger
+ Leaves lanceolate to oblanceolate. Calyx campanulate (in fruit), c. 1/2 cleft; lobes triangular subulate, 7-10 mm long. Filaments not purplish-suffused. Seeds ± 1.6 mm long, rugose-tuberculate 4 Hyoscyamus squarrosus
 
 
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