Flora of North America species comparison

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Monolepis

poverty weed
Habit Herbs, annual, polygamous, ± farinose or glabrous.
Stems

arising from base, prostrate to ascending, not jointed, not armed, not fleshy; ultimate branches not filiform.
Leaves

alternate, succulent;

blade triangular-lanceolate to oblanceolate or spatulate, base narrowly attenuate to cuneate, unlobed to hastate, margins sometimes with few teeth distally or completely entire, apex obtuse to rounded.
Inflorescences

1–many-flowered glomerules in leaf axils.
Flowers

bisexual or pistillate;

perianth segment usually 1 (2–3 in central flowers) or absent, bractlike, greenish;

stamens 1(–2) or absent (in pistillate flowers);

ovary superior;

stigmas 2, connate proximally.
Seeds

vertical, lenticular;

seed coat brown to black, smooth;

embryo annular;

perisperm copious.
Fruiting

structures somewhat flattened utricles;

pericarp loose when dry.
x

= 9.

Monolepis
Distribution
from USDA
Temperate regions of w North America; c and ne Asia; s South America
[BONAP county map]
Discussion

Species 5 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Leaves, at least some of them, hastately lobed; utricle 1.1-1.5 mm; pericarp whitish, cellular reticulate
M. nuttalliana
1. Leaves unlobed; utricle 0.5-0.7 mm; pericarp pale brown, turning black, tuberculate-papil- lose
M. spathulata
Source FNA vol. 4, p. 300. Author: Noel H. Holmgren.
Parent taxa Chenopodiaceae
Subordinate taxa
M. nuttalliana, M. spathulata
Name authority Schrader: Index Seminum (Göttingen) 1830: 4. (1830)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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