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Table 2 Comparison of Late Devonian seeds with uniovulate cupules

From: Further study of Late Devonian seed plant Cosmosperma polyloba: its reconstruction and evolutionary significance

Taxon Number of cupule segments Structure of cupule segments Number of cupule tips Number of integumentary lobes Shape and fusion of integumentary lobes
Dorinnotheca [27] 8 distally dissected >40 4 Triangular, basally fused
Condrusia [28] 2 flattened and broad 2
Pseudosporogonites [2] 1 short, fused and collar/trumpet shaped 3-4 Flattened, 1/3 fused
Latisemenia [4] 5 broad and cuneate 5 4 Flattened, 1/2-2/3 fused
Cosmosperma 2? Distal 1/2-2/3 dissected up to 16 4 Linear, basal 1/3 fused