Paper · 1970 · Annals of Botany

On the Structure of the Seeds of Williamsonia Collected from the Middle Jurassic Rocks of Amarjola in the Rajmahal Hills, India

B. D. SHARMA

4
claims
8
verbatim quotes
16
citations
1
research areas
—
Not open access

Abstract

Seeds of Williamsonia collected from Amarjola in the Rajmahal Hills, Bihar, are described. Mature seeds are found in ripe, naked, bractless fructifications. Seeds are oblong or ovate, stalked, dicotyledonous, partially endospermic, and have long micropyles. The seed coat is differentiated into an outer covering of tubular cells, middle parenchymatous true integument, and an inner vascularized layer which forms after fertilization and as a result of modification of the peripheral portion of nucellus.

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Claims 4

Observationobservedoriginal resultmeasured

Claim · model-written summary

Mature seeds occur in ripe, naked, bractless fructifications.

Taxon
WilliamsoniaWilliamsoniat0
Outcome
Mature seeds are found in ripe, naked, bractless fructificationse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Williamsonia
Williamsonia · Taxon · picture of the genus (one of its species)Maurice Raymond · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Mature seeds are found in ripe, naked, bractless fructifications.”

✓ located verbatim in the source · abstract, characters 91–156 · show in text ↑
t0

“Williamsonia”

✓ located verbatim in the source · title, characters 33–45 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Seeds are oblong or ovate, stalked, dicotyledonous, partly endospermic and long-micropylar.

Taxon
WilliamsoniaWilliamsoniat0
Outcome
oblong or ovate, stalked, dicotyledonous, partially endospermic, and have long micropylese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Williamsonia
Williamsonia · Taxon · picture of the genus (one of its species)Maurice Raymond · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Seeds are oblong or ovate, stalked, dicotyledonous, partially endospermic, and have long micropyles.”

✓ located verbatim in the source · abstract, characters 157–257 · show in text ↑
t0

“Williamsonia”

✓ located verbatim in the source · title, characters 33–45 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The seed coat has an outer tubular-cell covering, middle parenchymatous integument and inner vascularized layer.

Taxon
WilliamsoniaWilliamsoniat0
Organ / stage
seed coate0
Outcome
outer covering of tubular cells, middle parenchymatous true integument, and an inner vascularized layere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Williamsonia
Williamsonia · Taxon · picture of the genus (one of its species)Maurice Raymond · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The seed coat is differentiated into an outer covering of tubular cells, middle parenchymatous true integument, and an inner vascularized layer”

✓ located verbatim in the source · abstract, characters 258–401 · show in text ↑
t0

“Williamsonia”

✓ located verbatim in the source · title, characters 33–45 · show in text ↑
Mechanismobservedoriginal resultmeasured

Claim · model-written summary

The inner vascularized layer forms after fertilization from peripheral nucellus.

Taxon
WilliamsoniaWilliamsoniat0
Organ / stage
peripheral portion of nucelluse0
Outcome
inner vascularized layere0
Qualifier
after fertilizatione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Williamsonia
Williamsonia · Taxon · picture of the genus (one of its species)Maurice Raymond · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e0

“an inner vascularized layer which forms after fertilization and as a result of modification of the peripheral portion of nucellus.”

✓ located verbatim in the source · abstract, characters 374–504 · show in text ↑
t0

“Williamsonia”

✓ located verbatim in the source · title, characters 33–45 · show in text ↑