Amaranthus sect. Acanthochiton

(Torrey) Mosyakin & K. R. Robertson

Ann. Bot. F enn. 33: 277. 1996.

Basionym: Undefined sect. Acanthochiton Torrey in L. Sitgreaves, Rep. Exped. Zuni Colorado Rivers, 170. 1853
Treatment appears in FNA Volume 4. Treatment on page 419.

Plants annual, glabrous or glabrescent. Bracts of pistillate flowers leaflike, deltate or rhombic-deltate, very broad, margins crispate and denticulate. Pistillate flowers: tepals 5, outer tepals linear to narrowly lanceolate, inner tepals spatulate to fan-shaped. Utricles dehiscence circumscissile.

Distribution

sw North America

Discussion

Species 1.

Selected References

None.

"broad" is not a number.

mucronulate;emarginate;obtuse;emarginate;obtuse;acute +
Sergei L. Mosyakin +  and Kenneth R. Robertson +
(Torrey) Mosyakin & K. R. Robertson +
rounded +  and narrowly cuneate +
Undefined sect. Acanthochiton +
orbiculate +  and linear +
persistent +
rhombic-deltate +, deltate +  and leaflike +
sw North America +
peripheral +
hypogynous +
minute +  and small +
not +  and dehiscent +
terminal +  and axillary +
spatulate;fan-shaped +
reduced +
denticulate +  and crispate +
scarious +  and membranaceous +
well-developed +
rudimentary +
Ann. Bot. F enn. +
brown +, reddish-brown +  and black +
lenticular +  and subglobose +
well-developed +
nearly +, simple +  and branched +
prostrate +  and decumbent +
erect +  and ascending +
not fleshy +
slender +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Acanthochiton +, Acnida +, Albersia +, Amblogyna +, Euxolus +, Mengea +, Sarratia +  and Scleropus +
Amaranthus sect. Acanthochiton +
Amaranthus subg. Acnida +
section +
distinct +
subequal +
indurate +, membranaceous +, chartaceous +  and scarious +
walled +  and 3(-5)-veined +
circumscissile +
tuberculate +  and rugose +
elongate-ovoid +, ovoid +  and globose +
membranaceous +
glabrescent +  and glabrous +