Cultivar 1650: Douglas

Taxon ID:

Usage Facet: class=edible; edible_score=1.0; ornamental_score=0.0; inferred_from_taxon=no

Relationships: 0 | Linked Entities (visible): 0 | Evidence claims: 10 | History events: 0 | Catalog issue offerings: 0

Open profile JSON | Open lineage explorer | Open lineage JSON

Evidence Badge: emerging | claims=10 | sources=2 | contradictions=0

Claim Types: description_snippet:2, recommendation_context:2, flavor_profile:1, fruit_color:1, fruit_size:1, growth_habit:1, taxon_context:1 | Open evidence summary JSON | Open citation drawer JSON

Connected Views: lineage table | lineage graph | history charts | trait matrix | search

Link Filter: showing signal links (candidate hidden); hidden candidate links=0. Show candidate links

Wiki Draft

Douglas is an apple cultivar listed in A Study of Northwestern Apples with its origin given as Minnesota [S1].

The fruit is described as large, very regular, and oblate, with surface coloring much like Duchess and few obscure gray dots [S1]. The entry notes a regular narrow cavity with some radiating russet, a very short stem, a narrow abrupt basin, and a closed calyx [S1].

Its flesh is white, juicy, subacid, and rated good [S1]. The listed season is August to September [S1].

Summary source basis

S1: A Study of Northwestern Apples

This summary currently draws chiefly from A Study of Northwestern Apples, with 1 additional supporting sources linked below.

Featured source descriptions

“Cavity regular, acuminate, narrow, with some radiating russet; stem very short; basin smooth, abrupt, narrow; calyx closed, segments erect convergent.”
— ^[1]

“Core closed; cells roundish ovate, slit; tube conical; stamens median; seeds about ten, plump.”
— ^[1]

“Flesh white, juicy, subacid, good.”
— ^[1]

Parentage

Direct parent cultivars

No direct linked parent cultivars promoted yet.

Parentage claim text

No direct breeding_cross claim text yet.

Lineage Links

Derived or downstream cultivar links

No derived or downstream lineage links yet.

Story Highlights

Source-story quotations

"Douglas (No. 3)—Origin, Minnesota—Fruit large, very regular, oblate; surface coloring, much like Duchess; dots very obscure, gray, few; cavity regular, acuminate, narrow, some radiating russet; stem very short; basin smooth, abrupt, narrow; calyx closed, segments erect convergent. Core closed; ... seeds about ten, pluA Study of Northwestern Apples, p47
"Douglas (No. 3)—Origin, Minnesota—Fruit large, very regular, oblate; surface coloring, much like Duchess; dots very obscure, gray, few; cavity regular, acuminate, narrow, some radiating russet; stem very short; basin smooth, abrupt, narrow; calyx closed, segments erect convergent. Core closed; ... seeds about ten, pluA Study of Northwestern Apples, p47
"Douglas (No. 3)—Origin, Minnesota—Fruit large, very regular, oblate; surface coloring, much like Duchess; dots very obscure, gray, few; cavity regular, acuminate, narrow, some radiating russet; stem very short; basin smooth, abrupt, narrow; calyx closed, segments erect convergent. Core closed; ... seeds about ten, pluA Study of Northwestern Apples, p47
"Douglas (No. 3)—Origin, Minnesota—Fruit large, very regular, oblate; surface coloring, much like Duchess; dots very obscure, gray, few; cavity regular, acuminate, narrow, some radiating russet; stem very short; basin smooth, abrupt, narrow; calyx closed, segments erect convergent. Core closed; ... seeds about ten, pluA Study of Northwestern Apples, p47

Family Navigation

Taxonomy context: No family-tree context surfaced yet.

Related cultivars mentioned in source context

No sibling cultivars surfaced from source quotes yet.

Cold Hardiness

Zone assertions are structured rows. Hardiness claim text appears in evidence claims and page-linked citations.

Zone Min	Zone Max	Zone Text	Assertion Type	Outcome	Location	Confidence
No explicit zone assertion rows yet.

Media Gallery

No linked media assets.

Citation Drawer (Top Supporting Sources)

Document	Title/URL	Rights	Claims	Relationships	History Events	Pages	Snippets
14	A Study of Northwestern Apples	unknown	5	0	0	p47	Core closed; cells roundish ovate, slit; tube conical; stamens median; seeds about ten, plump.; Flesh white, juicy, subacid, good.; Surface coloring is like Duchess.; Fruit described as large and very regular.
106	Daniels planting guide, 1950	unknown	5	0	0	p15	Does equally well in full sun or partial shade.; Described as the hardiest and most widely used of the firs.; Deep green to bluish-green foliage of pleasing softness.; A rapidly growing, large, symmetrical tree.

Citation Evidence (Page-Linked Quotes)

Document	Page	Claim Type	Claim	Quote	Match
106	p15	recommendation_context	Does equally well in full sun or partial shade.	DOUGLAS—Arapidly growing, large, symmetrical tree.	page_block:0.90
106	p15	recommendation_context	Described as the hardiest and most widely used of the firs.	DOUGLAS—Arapidly growing, large, symmetrical tree.	page_block:0.90
106	p15	description_snippet	Deep green to bluish-green foliage of pleasing softness.	DOUGLAS—Arapidly growing, large, symmetrical tree.	page_block:0.90
106	p15	growth_habit	Arapidly growing, large, symmetrical tree.	DOUGLAS—Arapidly growing, large, symmetrical tree.	page_block:0.90
106	p15	taxon_context	Listed under The Firs.	DOUGLAS—Arapidly growing, large, symmetrical tree.	page_block:0.90
14	p47	description_snippet	Core closed; cells roundish ovate, slit; tube conical; stamens median; seeds about ten, plump.	"Douglas (No. 3)—Origin, Minnesota—Fruit large, very regular, oblate; surface coloring, much like Duchess; dots very obscure, gray, few; cavity regular, acuminate, narrow, some radiating russet; stem very short; basin sm	page_block:0.90
14	p47	flavor_profile	Flesh white, juicy, subacid, good.	"Douglas (No. 3)—Origin, Minnesota—Fruit large, very regular, oblate; surface coloring, much like Duchess; dots very obscure, gray, few; cavity regular, acuminate, narrow, some radiating russet; stem very short; basin sm	page_block:0.90
14	p47	fruit_color	Surface coloring is like Duchess.	"Douglas (No. 3)—Origin, Minnesota—Fruit large, very regular, oblate; surface coloring, much like Duchess; dots very obscure, gray, few; cavity regular, acuminate, narrow, some radiating russet; stem very short; basin sm	page_block:0.90
14	p47	fruit_size	Fruit described as large and very regular.	"Douglas (No. 3)—Origin, Minnesota—Fruit large, very regular, oblate; surface coloring, much like Duchess; dots very obscure, gray, few; cavity regular, acuminate, narrow, some radiating russet; stem very short; basin sm	page_block:0.90
14	p47	entry_location	Origin listed as Minnesota.	"Douglas (No. 3)—Origin, Minnesota—Fruit large, very regular, oblate; surface coloring, much like Duchess; dots very obscure, gray, few; cavity regular, acuminate, narrow, some radiating russet; stem very short; basin sm	page_block:0.90

Nursery Offering Timeline

Year	Nursery	Catalog Issue	Relation
No catalog issue offerings linked.

Linked Entities

Relation	Type	ID	Label
No linked entities at this filter level.

Evidence Claims

Type	Claim	Confidence
recommendation_context	Does equally well in full sun or partial shade.	0.96
recommendation_context	Described as the hardiest and most widely used of the firs.	0.95
description_snippet	Deep green to bluish-green foliage of pleasing softness.	0.96
growth_habit	A rapidly growing, large, symmetrical tree.	0.98
taxon_context	Listed under The Firs.	0.99
description_snippet	Core closed; cells roundish ovate, slit; tube conical; stamens median; seeds about ten, plump.	0.94
flavor_profile	Flesh white, juicy, subacid, good.	0.95
fruit_color	Surface coloring is like Duchess.	0.88
fruit_size	Fruit described as large and very regular.	0.95
entry_location	Origin listed as Minnesota.	0.93

History Events

ID	Type	Year	Label
No history events.