H.12.1. Subordinate taxa within nothospecies may be recognized without an obligation to specify parent taxa at the subordinate rank. In this case non-hybrid infraspecific categories of the appropriate rank are used.
Ex. 1. Mentha ×piperita f. hirsuta
Sole; Populus ×canadensis var. serotina (R. Hartig) Rehder and
P. ×canadensis var. marilandica (Poir.) Rehder (see also
Art. H.4 Note 1).
Note 1. As there is no statement of parentage at the rank concerned there is no control of circumscription at this rank by parentage (compare
Note 2. It is not feasible to treat subdivisions of nothospecies by the methods of both
Art. H.10 and H.12.1 at the same rank.
H.12.2. Names published at the rank of nothomorph are treated as having been published as names of varieties (see Art. 50).
Subject index | Index to scientific names
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(c) by International Association for Plant Taxonomy. This page last updated Feb. 12, 2001.