Cirsium pitcheri (Torrey ex Eaton) Torrey & A. Gray (Q3020)
Cirsium pitcheri is a taxon with the rank species within the genus Cirsium
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| English |
Cirsium pitcheri (Torrey ex Eaton) Torrey & A. Gray
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Cirsium pitcheri is a taxon with the rank species within the genus Cirsium
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Statements
taxon/id/Cirsium pitcheri (Torrey ex Eaton) Torrey & A. Gray
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Cirsium pitcheri (Torrey ex Eaton) Torrey & A. Gray
Cirsium pitcheri
(Torrey ex Eaton) Torrey & A. Gray
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York.
accepted
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CA-ON
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Newmaster, S.G. & S. Ragupathy. 2005. Flora Ontario - Integrated Botanical Information System (FOIBIS), Phase I. University of Guelph, Canada. http://www.uoguelph.ca/foibis http://www.uoguelph.ca/foibis/
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180–200 m
180 meter
200 meter
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Stems 1 or few, erect, densely gray-tomentose;
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branches 0 to several, ascending to spreading.
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Leaves: blades elliptic to obovate, 10–30 × 8–14 cm, deeply divided nearly to midveins, lobes ascending to spreading, linear, remote, margins revolute, entire or minutely spinulose, main spines 1–2 mm, faces gray-tomentose, more densely so abaxially;
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basal present or withered at flowering, petiolate;
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principal cauline well distributed, bases decurrent as linear-lobed to spiny wings 1–3 cm;
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distal cauline well developed.
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Heads 1–20+ in corymbiform arrays.
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Involucres ovoid to campanulate, 2–3 × 2–3 cm, loosely arachnoid on phyllary margins or glabrate.
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Phyllaries in 6–8 series, imbricate, ovatelanceolate (outer) to linear-lanceolate (inner), abaxial faces with narrow glutinous ridge;
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outer and middle appressed, acute, spines ascending to spreading, slender, 1–2 (–3) mm;
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apices of inner often flexuous, flattened, spineless, scabrid.
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Corollas dull white or pinkish-tinged (rarely rich purple), 20–30 mm, tubes 8.5–15 mm, throats 4.5–10 mm, lobes 3–8 mm;
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style tips 3.5–5.5 mm.
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Cypselae light-brown, sometimes with darker streaks, 6–7.5 mm, apical collars lighter colored, very narrow;
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ovatelanceolate
linear-lanceolate
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usually noticeably shorter
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