Research source
Cobia (1969) — Hoya carnosa with tricolor foliage, USPP2950
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 1969-12-09
This source record is live while its research review continues. Bibliographic details and interpretations may change as the evidence is checked.
Citation
Barnell L. Cobia. 1969-12-09. pp. USPP 2,950, including 1970 Certificate of Correction.
Evidence scope and limits
Original and extraction filed; bounded source statements retained. Descriptive title does not independently establish the modern cultivar name Tricolor. Correction wording and colour-standard details remain under review; patent plates remain private.