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Plantago ser. Hispidulae, a taxonomic revision Knud Rahn
Author(s) -
Rahn Knud
Publication year - 1982
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.1982.tb01432.x
Subject(s) - biology , pollen , botany , stamen , plantago , heterostyly , inflorescence
Plantago ser. Hispidulae Rahn belongs to subgen. Psyllium (Juss.) Harms sect. Gnaphaloides Barn. 5 species are recognized, they are all narrow–leaved annuals confined to the area west of the Andes. P. limensis Pers. occurs in Peru; P. litorea Phil., P. hispidula Ruiz & Pav., and P. rancagua Steud. in those parts of Chile with drought during the summer, and P. lundborgii Sparre on the island of San Ambrosio. Flowers are cleistogamic with small corolla lobes and small anthers, very rarely chasmogamic with larger corolla lobes and anthers. Experiments demonstrated that pollination is necessary for development of seeds in cleistogamic flowers, and that transfer of pollen from one such flower to another is almost impossible.