The distribution, reproductive biology, and morphology of Lythrum species, hybrids and cultivars in Manitoba / Kimberly Alexandra Ottenbreit.
Material type:
TextPublication details: Winnipeg, MB : University of Manitoba, 1991.Description: vii, 145 leaves : ill. , maps ; 28 cmOnline resources: Abstract: Lythrum salicaria L. (purple loosestrife) is a rapidly spreading,naturalized perennial herb of moist habitats and is considered detrimental to wetland productivity in North America. The first herbarium record for Manitoba was collected from Neepawa in 1896. As of 1991, 38 sites in Manitoba from field work, correspondence and herbarium records were identified. Most of these were in the watersheds of the Red and Assiniboine Rivers. Dispersal is mostly by means of seed.Significantly more seed matures in the capsules in the lower and mid regions of the infructescence compared to those from the top. Seed is shaken by wind from the capsules between late summer and the end of winter. Germinability of seed from 28 cultivated and naturalized populations averaged 92 percent, however cultivars had low seed production (especially 'Morden Pink'). Discriminant analyses identified calyx pubescence, calyx lobe length, and calyx appendage length as significantly reliable features for separation of c
| Item type | Current library | Collection | Call number | Status | Date due | Barcode |
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Electronic Report
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Electronic Library | Non-fiction | OTT (Browse shelf(Opens below)) | Available | 1554 |
Thesis(M.Sc.)--University of Manitoba, 1991.
Includes bibliographical references (leaves 138-145).
Lythrum salicaria L. (purple loosestrife) is a rapidly spreading,naturalized perennial herb of moist habitats and is considered detrimental to wetland productivity in North America. The first herbarium record for Manitoba was collected from Neepawa in 1896. As of 1991, 38 sites in Manitoba from field work, correspondence and herbarium records were identified. Most of these were in the watersheds of the Red and Assiniboine Rivers. Dispersal is mostly by means of seed.Significantly more seed matures in the capsules in the lower and mid regions of the infructescence compared to those from the top. Seed is shaken by wind from the capsules between late summer and the end of winter. Germinability of seed from 28 cultivated and naturalized populations averaged 92 percent, however cultivars had low seed production (especially 'Morden Pink'). Discriminant analyses identified calyx pubescence, calyx lobe length, and calyx appendage length as significantly reliable features for separation of c