Boerhavia coulteri

(Hooker f.) S. Watson

Proc. Amer. Acad. Arts 24: 70. 1889.

WeedyIllustrated
Basionym: Senkenbergia coulteri Hooker f. in G. Bentham and J. D. Hooker, Gen. Pl. 3: 6. 1880
Treatment appears in FNA Volume 4. Treatment on page 26. Mentioned on page 19, 28.

Herbs, annual; taproot tapered, soft or ± woody. Stems erect to decumbent-ascending, sparingly to profusely branched throughout, 2–8 (–15) dm, usually minutely puberulent, often also with long, spreading hairs, occasionally also glandular basally, glabrous distally. Leaves mostly in basal 1/2; larger leaves with petiole 5–30 mm, blade lanceolate, ovate, oval, deltate-ovate, or narrowly deltate, 10–50 × 6–32 mm (distal leaves usually shorter, proportionately narrower), adaxial surface usually glabrous, sometimes sparsely hirtellous, abaxial surface paler than adaxial, usually glabrous, sometimes sparsely puberulent or with few coarse hairs, usually neither surface punctate, base acute, obtuse, or round, margins sinuate, often crisped, apex acute, obtuse, or rounded. Inflorescences terminal and axillary, forked ca. 2–5 times unevenly, usually with sticky internodal bands; branches strongly ascending, terminating in spicate or racemose flower clusters, axis 15–60 mm. Flowers: pedicel 0.1–1.6 mm; bracts at base of perianth soon deciduous, 1–2, usually lanceolate, lance-acuminate, or linear-lanceolate, rarely ovate, 0.4–1 mm; perianth white to pale-pink, campanulate distal to constriction, 0.7–2 mm; stamens (1–) 2–3 (–4), included or slightly exserted. Fruits 4–20 (–22) per cluster, remotely spaced or overlapped by 1–100% of their length, or 2–4 in group, separated by small gap from next group and with distal spikelets overlapping, straw colored to pale redbrown, narrowly obovoid to narrowly obpyramidal, 2–3.2 (–3.6) × 0.9–1.1 (–1.4) mm (l/w: [1.9–] 2.1–3.1 [–3.3]), apex rounded to bluntly conic-truncate, or truncate, glabrous; ribs 5, obtuse or round-obtuse, often with sharp ridges, slightly rugose near sulci; sulci 0.1–0.3 times as wide as base of ribs, smooth or slightly rugose, not papillate.

Distribution

V4 41-distribution-map.gif

Ariz., Calif., N.Mex., Tex., Utah, n Mexico

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Fruits often overlapping 50-100% of their lengths, often ± fasciculate in groups of 2-4, 2.5-3.6 mm, apex truncate, round-truncate, bluntly conic, or rounded Boerhavia coulteri var. coulteri
1 Fruits remote or some overlapping 1-50% of their lengths, infrequently 2-3 in a cluster, 2-2.4+ mm, occasionally longer, usually rounded apically Boerhavia coulteri var. palmeri

"thin" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Boerhavia coulteri"
with few coarse hairs +, puberulent +  and glabrous +
hirtellous +  and glabrous +
truncate +  and conic-truncate +
Richard W. Spellenberg +
(Hooker f.) S. Watson +
1.5 cm15 mm <br />0.015 m <br /> (6 cm60 mm <br />0.06 m <br />) +
glutinous +
symmetric +  and asymmetric +
deciduous +
1 +  and 2 +
round +, obtuse +  and acute +
unequal +
woody +, leathery +  and fleshy +
Senkenbergia coulteri +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
deltate;deltate-ovate;deltate;deltate-ovate;oval;ovate;lanceolate +
6mm;32mm +
deciduous +  and persistent +
distinct +
ovate +, linear-lanceolate +, lance-acuminate +  and lanceolate +
minute +  and not accrescent +
corollalike +  and petaloid +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
Ariz. +, Calif. +, N.Mex. +, Tex. +, Utah +  and n Mexico +
curved +  and straight +
inconspicuous +  and showy +
1 +  and 80 +
chasmogamous +  and bisexual +
separated +, overlapped +  and spaced +
2 (?) +  and 4 (?) +
obpyramidal +, obovoid +, oblong-clavate +, clavate +  and fusiform +
coriaceous +
small +
thyrsiform +, cymose +  and pedunculate +
2-5 times with sticky internodal bands +
unequal +
(4-)5-lobed +
pubescent +  and glabrous +
crisped +  and sinuate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (?) +  and 0.16 cm1.6 mm <br />0.0016 m <br /> (?) +
campanulate +
constricted +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Proc. Amer. Acad. Arts +
glandular-pubescent +, glabrous +  and smooth +
round-obtuse +  and obtuse +
thick +  and thin +
fibrous;fleshy +
membranaceous +
ribbed +, 10-ribbed +  and 5-ribbed +
pubescent +, glabrous +  and warty +
wrinkled +
Weedy +  and Illustrated +
exserted +  and included +
erect +  and decumbent-ascending +
fusiform +  and linear +
filiform +
not papillate +, rugose +  and smooth +
0.1-0.3 times as wide as base +
woody +  and soft +
Boerhavia coulteri +
Boerhavia +
species +
umbellate +, subumbellate +, spicate +  and cymose +
capitate +  and subcapitate +
singly +  and racemose +
gland-tipped +
expanded +
pubescent +, glabrous +  and glandular +
fusiform +  and ropelike +