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Astragalus trichocalyx Nuttall. Section: Sarcocarpi. Ozark Ground-plum, Cream Ground-plum. Phen: (Mar-) Apr-May (-Jun). Hab: Glades, barrens, woodlands, and prairies, often over calcareous substrates. Dist: IL south and west through MO, AR, and se. KS to nc. LA, ne. TX, and OK.

Origin/Endemic status: Native

Taxonomy Comments: Barneby (1964) describes this taxon (relative to the other taxa, almost all formerly species, he treats as varieties of A. crassicarpus) as "ordinarily very distinct" and states that it "differs (at least ideally) from var. crassicarpus in growth-habit, pubescence, and especially ecology, [and] might with reason be retained at specific level". The evidence supports its recognition as a species.

Synonymy ⓘ: = Astragalus crassicarpus Nutt. var. trichocalyx – Ar, C, FNA11.2, GrPl, Il, K3, K4, NcTx, SE3, Tx, Barneby (1964), Isely (1998); = Astragalus mexicanus A.DC. var. trichocalyx (Nutt.) Fernald – F

Links to other floras: = Astragalus crassicarpus var. trichocalyx - FNA11.2

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Heliophily ⓘ: 9

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image of plant© Alan Cressler: Astragalus crassicarpus var. trichocalyx, Dolomite Glades, Valley View Glades Natural Area, Jefferson County, Missouri 1 by Alan Cressler source | Original Image ⭷
image of plant© theo_witsell, some rights reserved (CC BY-NC), uploaded by theo_witsell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© theo_witsell, some rights reserved (CC BY-NC), uploaded by theo_witsell source CC-BY-NC, permission granted to NCBG | Original Image ⭷

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