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Hybrid Swarms.
Hybrid swarms in Marlborough are infrequent and have been observed only in the case of the following species and varieties. It is noteworthy that Celmisia spectabilis in one or other of its three local varieties is involved in each instance.
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(1) Celmisia spectabilis × C. Traversii.
Such a swarm occurs near Mount Blowhard on the Raglan Range.
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(2) Celmisia spectabilis × C. spectabilis var. angustifolia.
A small swarm of this parentage occurs on Mount Schiza. Many plants of the same parentage form part of a huge and complex swarm on Mount Patriarch.
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(3) Celmisia spectabilis × C. spectabilis var. albomarginata.
Celmisia spectabilis var. angustifolia × var. albomarginata.
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As already stated, a complex swarm occurs about 4000–4500ft. altitude on Mount Patriarch in which all three local varieties of C. spectabilis have met and given rise to a numerous progeny in which the influence of each parental variety is obvious. The last-named cross forms a smaller swarm on the St. Arnaud Mountains.