. Atlas of the rare vascular plants of Ontario. Rare plants; Botany. HABITAT: Limestone and serpentine outcrops. STATUS: Rare in Canada. Endangered in Pennsylvania and Tennessee; rare in lowa. NOTES: Cerastium velutinum is best treated as a species that is distinct from C. arvense, since it has twice as many chromosomes, is morphologically distinct, and is genetically isolated. It is currently under review in the United States for federal threatened or endangered status ( Fish & Wildlife Service 1985). It is very local in those states where it occurs. HABITAT: serpentine. Affleurements
. Atlas of the rare vascular plants of Ontario. Rare plants; Botany. HABITAT: Limestone and serpentine outcrops. STATUS: Rare in Canada. Endangered in Pennsylvania and Tennessee; rare in lowa. NOTES: Cerastium velutinum is best treated as a species that is distinct from C. arvense, since it has twice as many chromosomes, is morphologically distinct, and is genetically isolated. It is currently under review in the United States for federal threatened or endangered status ( Fish & Wildlife Service 1985). It is very local in those states where it occurs. HABITAT: serpentine. Affleurements de calcaire et de SITUATION: Rare au Canada. Menacée d'extinction en Pennsylvanie et au Tennessee; rare en lowa. REMARQUES: Il est bon de traiter Cerastium velutinum comme une espèce distincte de C. arvense. car elle possède deux fois plus de chromosomes, présente des différences morpholo- giques et se trouve génétiquement isolée. Les États- Unis étudient actuellement la possibilité de considérer cette espèce comme menacée ou en danger de disparition ( Fish & Wildlife Service 1985). Dans les États où elle apparaît, sa présence a un caractère très localisé. ^ Morton 1987 '-ç. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Argus, George W. (George William); National Museum of Natural Sciences (Canada). Botany Division. Ottawa : Botany Division, National Museum of Natural Sciences = Division de la botanique, Musée national des sciences naturelles
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectbotany
