Halophila engelmannii

Ascherson in G. B. von Neumayer

in G. B. von Neumayer,Anleitung zu Wissenschaftlichen Beobachtungen auf Reisen 368. 1875.

Illustrated
Treatment appears in FNA Volume 22.
Revision as of 00:03, 30 July 2020 by imported>Volume Importer
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Rhizomes with 2 scales at each node. Erect stem apparent, scales 2, near middle. Leaves in pseudowhorl at apex of erect stem, 10–30 × 3–6 mm; blade linear-oblong to oblong, base cuneate, margins serrulate, apex obtuse to apiculate. Inflorescences: spathes 1-flowered. Flowers unisexual, staminate and pistillate on different plants; staminate flowers unknown; pistillate flowers sessile to nearly sessile, ca. 4 mm. Fruits beaked. Seeds 0.3 mm.


Phenology: Flowering spring.
Habitat: Sandy to coral substrates of marine waters
Elevation: -40–0 m

Distribution

V22 96-distribution-map.jpg

Fla., La., Tex., West Indies (Cuba), West Indies (Bahama Islands)

Discussion

Lower Taxa

None.
... more about "Halophila engelmannii"
linear;fusiform +
obtuse +  and apiculate +
Robert R. Haynes +
Ascherson in G. B. von Neumayer +
abbreviated +
cuneate +
linear-oblong;oblong +
moniliform +
Fla. +, La. +, Tex. +, West Indies (Cuba) +  and West Indies (Bahama Islands) +
-40–0 m +
sessile +  and nearly sessile +
4 cm40 mm <br />0.04 m <br /> (?) +
not echinate +
ridged;ovoid;spheric +
Sandy to coral substrates of marine waters +
sessile +, cymose +  and 1-flowered +
petiolate +  and sessile +
whorled +, opposite +  and alternate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2-6[-16]-carpellate +
3-parted +  and 6-parted +
differentiated +
Flowering spring. +
pedicellate +  and sessile +
submersed +
in G. B. von Neumayer,Anleitung zu Wissenschaftlichen Beobachtungen auf Reisen +
allen1976b +, austin1978c +, davenport1980b +, gadella1973a +  and tarver1978b +
zygomorphic +  and actinomorphic +
higher +  and midway +
echinate;reticulate +
nearly +  and spheric +
0.3 cm3 mm <br />0.003 m <br /> (?) +
Illustrated +
connate +  and distinct +
(0-)2-many +
unbranched +  and rooted +
elongate +
not 2-fid +
Halophila engelmannii +
Halophila +
species +
petiolate +  and sessile +
without evident stem +  and caulescent +
perennial +  and annual +
water +, marine +  and brackish +
pubescent +  and glabrous +