Pono Plant access to important plants

Kokiʻo keʻokeʻo

Hibiscus arnottianus / Hibiscus waimeae

kokiʻo keʻokeʻo (the native white hibiscus)

ESA: endangered ssp.

This is the native, endemic white hibiscus of Hawaii, not the common ornamental white one you see everywhere. It is among the very few fragrant hibiscus in the world, a trait it evolved for hawk-moth pollination and one that most of the genus simply does not have. Its story is a lesson in reading a label: the same common name covers subspecies that are freely growable and subspecies that are among the rarest hibiscus on Earth, so getting the plant right means getting the subspecies right.

Status

Endangerment here is at the subspecies level, not the species level. Hibiscus arnottianus ssp. immaculatus (Molokaʻi) and Hibiscus waimeae ssp. hannerae (Kauaʻi) are federally Endangered under the US ESA; the other subspecies (arnottianus, punaluuensis, waimeae) are not listed and are freely growable. We say which subspecies a plant is, because the whole legal picture turns on it.

Native range

Endemic to Hawaii: Hibiscus arnottianus on Oʻahu and Molokaʻi, Hibiscus waimeae on Kauaʻi.

Propagation

  • cuttings (the standard route)
  • seed, best banked ex-situ for conservation stock
  • air-layering
  • grafting
  • hand-pollinate if you want true seed, because these hybridize readily

Under the mist

Our hypothesis, not established: It roots readily from cuttings, which is the same trait that makes a plant a plausible fit for a bare-root, high-oxygen mist chamber. We have not tested this taxon under the mist, so we call it a plausible candidate and nothing more.

Access

  • Nursery-propagated only, never wild-collected.
  • We label the exact species and subspecies, because mislabeling an endangered subspecies is how a lawful sale becomes an ESA Section 9 violation.
  • The unlisted subspecies (arnottianus, punaluuensis, waimeae) are open commerce.
  • The endangered subspecies (immaculatus, hannerae) are permit-gated conservation stock: a USFWS 50 CFR 17.62 permit is required before any interstate sale, even of our own cultivated plants, so we do not offer them in open commerce.
  • Every shipment leaving Hawaii clears APHIS inspection with no soil.

How to obtain: waitlist

First, which plant this is. The important one is the native, endemic kokiʻo keʻokeʻo, *Hibiscus arnottianus* of Oʻahu and Molokaʻi and *Hibiscus waimeae* of Kauaʻi. It is not the common ornamental white hibiscus you see in yards and hotel plantings, which is a white cultivar of the non-native *Hibiscus rosa-sinensis* with no scent and no conservation concern. Same three words, very different plant.

The hook is the scent. These natives are among the very few fragrant hibiscus in the world, a genuinely unusual trait that most of the genus lacks. We write it that careful way on purpose. You will find the plant sold with the claim that it is the world's only scented hibiscus, but that is a horticultural overstatement; the honest phrasing, which Wikipedia also uses, is that the two are among the very few members of the genus with fragrant flowers (Hawaiian hibiscus). The fragrance is strongest at dawn and again at dusk, tuned to the hawk-moths that pollinate it.

It is not the state flower, and it is often mistaken for the one that is. That title belongs to the yellow maʻo hau hele, *Hibiscus brackenridgei*, adopted in 1988. We say plainly that the native white does not hold it.

Endangerment sits at the subspecies level, and that is the detail that matters most. *H. arnottianus* ssp. immaculatus of Molokaʻi is federally Endangered and one of the rarest hibiscus on Earth, with roughly 150 to 300 wild plants by recent USFWS counts and historically described as fewer than a dozen (USFWS ECOS). *H. waimeae* ssp. hannerae of Kauaʻi is also federally Endangered. The remaining subspecies, arnottianus, punaluuensis, and waimeae, are not listed and are freely growable and saleable. This is why we insist on the exact subspecies on every label: it is the difference between open commerce and a permit.

For access we grow nursery stock only, never wild-collected. The unlisted subspecies we can offer in open commerce once we have stock; the endangered subspecies we treat as permit-gated conservation stock, which needs a USFWS 50 CFR 17.62 permit before any interstate sale even of our own cultivated plants. Everything leaving Hawaii clears APHIS with no soil. Culturally the flower is worn in lei and in the hair, the bud has a place in traditional medicine, and the bark yields cordage, but the rare fragrance is the standout (Hawaii DLNR).

Sources