Borrichia arborescens

(Linnaeus) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 489. 1836.

Basionym: Buphthalmum arborescens Linnaeus Syst. Nat. ed. 10, 2: 1227. 1759
Treatment appears in FNA Volume 21. Treatment on page 130.

Stems decumbent to ascending. Leaves (at least mid cauline) oblanceolate to linear, 5–10 (–15) × 0.4–2 cm, margins entire or dentate to serrate (teeth remote mostly toward apices), faces glabrous or sericeous (sometimes on same leaf). Heads borne singly or (3–6) in cymiform arrays (peduncles 0.5–5 cm). Involucres ovoid to hemispheric, (8–) 10–14 (–17) mm. Phyllaries 10–16 in 3–4 series (chartaceous in fruiting heads, outer ovate-elliptic, apices obtuse or acute, faces glabrate or sericeous; inner oblanceolate, apices rounded, obtuse, or acute, faces glabrous). Paleae: apices obtuse to acute. Ray-florets 7–15; laminae 5–8 × 2.5–4 mm. Disc-florets 20–50; corollas 5–6 mm, lobes 1–1.5 mm. Cypselae 3.5–5 mm, 4-angled. 2n = 28.


Phenology: Flowering late spring–summer.
Habitat: Rocky coasts, sandy marshes, beaches
Elevation: 0–10 m

Distribution

V21-317-distribution-map.gif

Fla., West Indies, Bermuda

Discussion

Borrichia arborescens grows in the Florida Keys, Bermuda, and the West Indies, including Jamaica and Guadeloupe. Plants of B. arborescens are usually glabrous; both glabrous and hairy plants occur in the northern West Indies. Common names that include “tree” are misleading because the plants are shrubs.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Borrichia arborescens"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
John C. Semple +
(Linnaeus) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
bristlelike +
coroniform +
cuneate +
Buphthalmum arborescens +
compound +  and simple +
ovate;obovate;ovate;obovate;oblanceolate;linear +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
hairy +  and glabrous +
fertile +  and bisexual +
fertile +  and bisexual +
Fla. +, West Indies +  and Bermuda +
0–10 m +
sericeous +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Rocky coasts, sandy marshes, beaches +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
1.4 cm14 mm <br />0.014 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
ovoid;hemispheric +
1 cm10 mm <br />0.01 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
2.5mm;4mm +
sessile +  and petiolate +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
5cm;10cm +
oblanceolate;linear +
0.4 cm4 mm <br />0.004 m <br /> (2 cm20 mm <br />0.02 m <br />) +
lance-triangular +
serrate +, dentate +  and entire +
toothed +  and entire +
2-carpellate +
persistent +
cupular +  and coroniform +
Flowering late spring–summer. +
10 +  and 16 +
unequal +  and subequal +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
decumbent +  and ascending +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Borrichia arborescens +
Borrichia +
species +
cylindric +
shorter to longer than campanulate +
toothed +  and entire +
shrub +  and subshrub +