Catalpeae

Smith, MacKenzie A., Greenwalt, Dale E. & Manchester, Steven R., 2023, Diverse Fruits And Seeds Of The Mid-Eocene Kishenehn Formation, Northwestern Montana, Usa, And Their Implications For Biogeography, Fossil Imprint 79 (1), pp. 37-88 : 63

Catalpeae sp.

Text-fig. 11i, j

M a t e r i a l. USNM PAL 624316, 625396, 624316.

L o c a l i t i e s. Dakin and Spring.

D e s c r i p t i o n. Bi-winged seed, 5.9–10.2 mm long, 1.1–1.4 mm wide; distal wing margin hairy; wings never wider than central body; central body 3.0 mm long; seed elliptical, 1.3–2.6 mm long 0.6–1.4 mm wide.

R e m a r k s. Bi-winged seeds are characteristic of many Bignoniaceae . The tribe Catalpeae DC. ex MEISN. includes the extant genera Catalpa SCOP. and Chilopsis D. DON , which both have distally shredded seed wings ( Lersten et al. 2002). We choose to point out this similarity instead of placing our specimens in Catalpeae , out of caution, because we have not conducted a full survey of the family; other bignoniaceous tribes might also have distally shredded seed wings.

Figures

Text-fig. 11. a: USNM PAL 624090 Chenopodium sp. 1. Scale bar 1mm. b: USNM PAL 624372 Chenopodium sp. 2. Scale bar 2mm. c: Chenopodium pratericola from Minnesota Wildflowers 2023b. d: Chenopodium hybridum, FLAS seed collection. Scale bar 1mm. e: USNM PAL 625523 Eucommia montana showing subapical stigmatic cleft, seed body and stipe. Scale bar 1mm. f: USNM PAL 625160 E. montana showing faint subapical stigmatic cleft and stipe. Scale bar 2mm. g: USNM PAL 768185 E. montana showing subapical stigmatic cleft, reticulate venation and stipe. Scale bar 2mm. h: USNM PAL 624697 Fraxinus sp. samara showing long persistent pedicel, seed body and wing. Scale bar 5mm. i: USNM PAL 625396 Catalpae seed with frayed wings. Scale bar 2mm. j: USNM PAL 624316 Catalpae seed with frayed wings. Scale bar 1mm. k: USNM PAL 722179 Apialean schizocarp with lateral spines and line of dehiscence. Scale bar 2mm.