Taxon ID:
Usage Facet: class=edible; edible_score=2.0; ornamental_score=0.0; inferred_from_taxon=no
Relationships: 0 | Linked Entities (visible): 0 | Evidence claims: 15 | History events: 0 | Catalog issue offerings: 0
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Evidence Badge: emerging | claims=15 | sources=1 | contradictions=0
Claim Types: description_snippet:1, flavor_profile:1, fruit_color:1, fruit_size:1, release_year_reference:1 | Open evidence summary JSON | Open citation drawer JSON
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Okolo is a pear described in South Dakota hardy fruit literature as a 1940 selection and as a seedling of Pyrus ovoidea (Simonii). [S1] It appears in a South Dakota bulletin section on pears described as resistant or immune to fire blight. Hansen later listed it among the pear selections available from his northern breeding and introduction work. [S1] [S2]
One source described the fruit as about 2 1/4 by 2 1/4 inches, and a 1944 note gave it as 2.5 by 2.25 inches. [S1] [S3] The sources agree it was a good sized pear. One note called it commercial in size and compared its shape to a medium Kieffer, while the fuller bulletin entry called it obtuse pyriform. [S1] [S3] The skin was recorded as clear light yellow with many minute dark russet dots. The flesh was described as white, firm, juicy, and delicious. [S1] The name was explained there as the Russian word for "round." [S1]
Okolo was also described as productive. The 1940 bulletin called the tree a heavy bearer, and the 1944 note called it a strong grower with a good crop. [S1] [S3] These records place it within Hansen's effort to combine the hardiness and blight resistance of northern Asian pears with the size and quality of standard cultivated pears, though no direct cross beyond the Pyrus ovoidea seedling description is given for Okolo itself. [S1] [S2]
The sources used here do not state a ripening season or storage life. [S1] [S2] [S3] They also do not give a direct winter hardiness rating, though its place in Hansen's northern pear program and in the fire blight resistant pear section shows the role it was meant to play in prairie and northern fruit breeding. [S1] [S2]
Summary source basis
This summary currently draws chiefly from New Hardy Fruits for the Northwest, with 2 additional supporting sources linked below.
Featured source descriptions
“Listed in the table of contents under 'Pears Resistant or Immune to Fire Blight.'”
— [1]
“Indexed to Bulletin 339, page 22.”
— [1]
“Stem long, stout.”
— [1]
“Flesh white, firm, juicy; flavor delicious.”
— [1]
Direct parent cultivars
Parentage claim text
Derived or downstream cultivar links
Source-story quotations
Taxonomy context: No family-tree context surfaced yet.
Related cultivars mentioned in source context
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. | ||||||
No linked media assets.
| Document | Title/URL | Rights | Claims | Relationships | History Events | Pages | Snippets |
|---|---|---|---|---|---|---|---|
| 1 | New Hardy Fruits for the Northwest | unknown | 15 | 0 | 0 | p23 | Okolo: Flesh white, firm, juicy; flavor delicious.; Okolo: flavor delicious; Okolo: 2y4 inches; Okolo: white |
| Document | Page | Claim Type | Claim | Quote | Match |
|---|---|---|---|---|---|
| 1 | p23 | verbatim_quote | (Okolo : the Russian for "round.") | (Okolo : the Russian for "round.") | normalized_exact:1.00 |
| 1 | p23 | verbatim_quote | Tree a heavy bearer | Tree a heavy bearer | normalized_exact:1.00 |
| 1 | p23 | verbatim_quote | Flesh white, firm, juicy; flavor delicious | Flesh white, firm, juicy; flavor delicious | normalized_exact:1.00 |
| 1 | p23 | verbatim_quote | Stem long, stout | Stem long, stout | normalized_exact:1.00 |
| 1 | p23 | verbatim_quote | Clear light yellow, with multitude of minute dark russet dots | Clear light yellow, with multitude of minute dark russet dots | normalized_exact:1.00 |
| 1 | p23 | verbatim_quote | Fruit 2Y4 x 2Y4 inches, obtuse pyriform | Fruit 2Y4 x 2Y4 inches, obtuse pyriform | normalized_exact:1.00 |
| 1 | p23 | verbatim_quote | Pyrus ovoidea (Sim onii) seedling | Pyrus ovoidea (Sim onii) seedling | normalized_exact:1.00 |
| 1 | p23 | verbatim_quote | OKOLO pear-1940 | OKOLO pear-1940 | normalized_exact:1.00 |
| Year | Nursery | Catalog Issue | Relation |
|---|---|---|---|
| No catalog issue offerings linked. | |||
| Relation | Type | ID | Label |
|---|---|---|---|
| No linked entities at this filter level. | |||
| Type | Claim | Confidence |
|---|---|---|
| description_snippet | Flesh white, firm, juicy; flavor delicious. | 0.54 |
| flavor_profile | flavor delicious | 0.57 |
| fruit_size | 2y4 inches | 0.58 |
| fruit_color | white | 0.55 |
| entry_basin_calyx | Clear light yellow, with multitude of minute dark russet dots | 0.88 |
| structured_entry_json | {"cultivar_name":"Okolo","year":1940,"heading_raw":"OKOLO","locations":[],"crosses":[],"fruit_size_mentions":["2Y4 inches"],"color_mentions":["yellow"],"morphology_terms":["round","russet"],"pedigree_phrases":[],"flavor_ | 0.95 |
| verbatim_quote | (Okolo : the Russian for "round.") | 0.97 |
| verbatim_quote | Tree a heavy bearer | 0.97 |
| verbatim_quote | Flesh white, firm, juicy; flavor delicious | 0.97 |
| verbatim_quote | Stem long, stout | 0.97 |
| verbatim_quote | Clear light yellow, with multitude of minute dark russet dots | 0.97 |
| verbatim_quote | Fruit 2Y4 x 2Y4 inches, obtuse pyriform | 0.97 |
| verbatim_quote | Pyrus ovoidea (Sim onii) seedling | 0.97 |
| verbatim_quote | OKOLO pear-1940 | 0.97 |
| release_year_reference | 1940 | 0.92 |
| ID | Type | Year | Label |
|---|---|---|---|
| No history events. | |||