Research source

Cobia (1972) — Hoya carnosa Rubra, USPP3105

A documented source used to build and check Hoya Library records. This page explains what the source is, what it contributes, and where its limits remain.

United States plant patent 1972-04-11

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Citation

Barnell L. Cobia. Hoya carnosa Rubra — United States Plant Patent 3,105. 1972-04-11. pp. USPP 3,105; filed original PDF pp. 1–5.

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Rubra patent reporting a sport on material called Tricolor and comparing the centre-variegated selection mainly with Exotica.

Historical parentage and resemblance are separate relationships. The Rubra profile includes the full historical patent plate, with its four photographs retained in their published context. Neither the description nor the plate authenticates plants currently sold under the name. Interpretation of the source’s colour standards remains unresolved.

Evidence scope and limits

Original and extraction filed; source-attributed historical origin and description retained. The exact full patent-plate facsimile is reviewed for display on the Rubra profile under USPTO patent-information guidance. Independent colour-standard and modern-clone questions remain unresolved.

Hoya records using this source

Hoya carnosaHoya carnosa is a species that climbs with fleshy leaves and rounded clusters of white to pink-tinged flowers. Linnaeus the Younger first published its original…

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Rights and access

Original factual paraphrase and citation; the Rubra profile includes the reviewed whole patent-plate facsimile under USPTO patent-information guidance. No open license for isolated photographs is asserted. Source-fidelity, scientific acceptance and modern clone identity remain separate.

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