Abstract
A distributional study of the Cactaceae of Ohio utilizing both literature and herbarium records revealed the presence of two species. Opuntia compressa (Salisb.) Macbr. is native but infrequent in the state's flora. It occurs primarily in sandy soil in two widely separated regions of the state: the southwest shore of Lake Erie and vicinity and the unglaciated Appalachian upland of southeastern Ohio. This disjunct pattern is likely related to a northern migration during a xerothermic period ensuing after the retreat of the Wisconsin glaciers. Opuntia macrorhiza Engelm. is introduced and naturalized only in the southwest corner of the state (Hamilton County), this naturalization being due to the creation of artificial xerophytic habitats, viz., the construction of railroad right-of-ways in gravel deposits. Both are variable species. However, the recognition of segregate species or even infraspecific taxa in Ohio appears unwarranted. The occurrence in Ohio of representatives of the cactus family is well known and is mentioned in or may be inferred from floristic works dealing with northeastern North America (Fernald, 1950; Gleason, 1952) as well as those dealing specifically with Ohio (Ely, 1907; Schaffner, 1932; Weishaupt, 1968). However, the taxa involved and their nomenclature have remained a source of confusion. Related is the fact that information on distribution of the Cactaceae within state boundaries is not readily available in the literature and may be gleaned only piecemeal, and in total incompletely.
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Claims 8
Claim · model-written summary
Two Cactaceae species were found in Ohio.
Verbatim
e0“A distributional study of the Cactaceae of Ohio utilizing both literature and herbarium records revealed the presence of two species”
Claim · model-written summary
Opuntia compressa is native but infrequent in Ohio.
Verbatim
e0“Opuntia compressa (Salisb.) Macbr. is native but infrequent in the state's flora”
Claim · model-written summary
Opuntia compressa occurs mainly in sandy soils in two separated Ohio regions.
Verbatim
e0“It occurs primarily in sandy soil in two widely separated regions of the state: the southwest shore of Lake Erie and vicinity and the unglaciated Appalachian upland of southeastern Ohio”
e1“Opuntia compressa (Salisb.) Macbr. is native but infrequent in the state's flora”
Claim · model-written summary
The disjunct Opuntia compressa pattern was linked tentatively to northern migration after glacial retreat.
Verbatim
e0“This disjunct pattern is likely related to a northern migration during a xerothermic period ensuing after the retreat of the Wisconsin glaciers”
e1“Opuntia compressa (Salisb.) Macbr. is native but infrequent in the state's flora”
Claim · model-written summary
Opuntia macrorhiza is introduced and naturalized only in Hamilton County.
- Taxon
- Opuntia macrorhiza
Opuntia macrorhizae0 - Outcome
- introduced and naturalizede0
- Setting
- Hamilton Countye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Opuntia macrorhiza Engelm. is introduced and naturalized only in the southwest corner of the state (Hamilton County)”
Claim · model-written summary
Artificial xerophytic railroad habitats were attributed as the cause of Opuntia macrorhiza naturalization.
- Taxon
- Opuntia macrorhizaOpuntia macrorhizae1
- Outcome
- naturalizatione0
- Qualifier
- creation of artificial xerophytic habitatse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this naturalization being due to the creation of artificial xerophytic habitats, viz., the construction of railroad right-of-ways in gravel deposits”
e1“Opuntia macrorhiza Engelm. is introduced and naturalized only in the southwest corner of the state (Hamilton County)”
Claim · model-written summary
Both Ohio cactus species were variable.
- Outcome
- variable speciese0
Verbatim
e0“Both are variable species”
t0“Cactaceae”
Claim · model-written summary
Recognizing segregate cactus species or infraspecific taxa in Ohio was considered unwarranted.
- Outcome
- recognition of segregate species or even infraspecific taxa in Ohioe0
Verbatim
e0“the recognition of segregate species or even infraspecific taxa in Ohio appears unwarranted”
t0“Cactaceae”