New Zealand Journal of Botany abstracts
The distribution and population structure of the temperate mistletoe
Ileostylus micranthus in the Northern Cemetery, Dunedin, New
ZealandPeter Bannister
GRAHAM L. STRONG
Botany Department
University of Otago
P.O. Box 56
Dunedin, New Zealand
Abstract The endemic mistletoe,
Ileostylus micranthus,
growing in the Northern Cemetery (Dunedin, New Zealand), was examined with
respect to both its occurrence on different host species and its distribution
on the trunk and within the canopy of its hosts. Only 3.5% of trees were
infected and the mistletoe was absent from hosts with trunk diameters of more
than 70 cm. The most frequently infected hosts were
Erica
lusitanica,
Betula pendula, and
Pittosporum
tenuifolium. Larger hosts generally supported more mistletoe infections
than smaller hosts. Most individual infections were small or medium-sized.
Mistletoe plants were distributed throughout the canopy of infected hosts but
were least frequent on the trunk and most frequent in the middle and lower
thirds of the canopy. Large mistletoes tended to be found more frequently on
the outer parts of the canopy and on the trunk than juvenile, small, and
medium-sized mistletoes.
Keywords Ileostylus micranthus; Loranthaceae;
mistletoe; population structure; New Zealand
New Zealand Journal of Botany, 2001, Vol. 39: 225-233
0028-825X/01/3902-0225 $7.00 (c) The Royal Society of New Zealand 2001
B99044
Received 16 August 1999; accepted 30 November 2000
PDF file of entire paper: medium quality (806K); (scanned from paper original: notes about this process)
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