Although some plants, both indigenous and naturalised, rarely or never produce flowers, or if they flower never produce seeds, yet no one doubts that phanerogamic plants are adapted to produce flowers, and the flowers to produce seed.
(some plants, both indigenous and naturalised; never produce; flowers; T:rarely) (phanerogamic plants; to produce; flowers) (they; flower; ) (the flowers; to produce; seed) (no one; doubts; that phanerogamic plants are adapted to produce flowers, and the flowers to produce seed) Context(no one doubts,List([131, 144))):(phanerogamic plants; are adapted; )
no one doubts,List([131, 144))
some plants, both indigenous and naturalised phanerogamic plants they the flowers no one phanerogamic plants
never produce to produce flower to produce doubts are adapted
flowers T:rarely
flowers
seed
that phanerogamic plants are adapted to produce flowers, and the flowers to produce seed