Cyanea solenocalyx
Genus: Cyanea
Status: Vulnerable
Range: Moloka'i; wet forest; 900-1,390m.
Growth form: Treelet, 1-4 m tall.
Image from Degener, 1934
As suggested by its name, the calyx lobes of this species are connate and form a cylinder. Also this species has distinctly dimorphic leaves with the juvenile being shortly lobed and those of the adult being entire or sinuate. Both of these features are illustrated in Degener's illustration to the right.
The full list of Cyanea species on Moloka'i:
| Species | Status | Notes |
| Cyanea angustifolia | part of Delisseoideae | |
| Cyanea mannii | T&E | part of Delisseoideae |
| Cyanea procera | T&E | part of Delisseoideae |
| Cyanea solanacea | ||
| Cyanea dunbariae | T&E | similar to Cy. solanacea, but spineless |
| Cyanea munroi | Extinct | was part of Cy. grimesiana until 1998 |
| Cyanea profuga | T&E | only rediscovered in 2002 |
| Cyanea solanocalyx |
Description: growth form: stout single-stemmed treelet with a crown of leaves at the top, 1 to 4m tall, sometimes sparingly branched, stem hollow, woody at the base, fleshy above, sometimes unarmed, sometimes armed, especially in juveniles, muricate to aculeate, with pale yellow conical spines. leaves: distinctly dimorphic when young, ovate or cordate, shortly lobed, hispid to prickly; in the adult, obovate-oblong, 30 to 60 cm long by 10 to 20 cm wide, entire or sinuate, the apex variable - shortly acuminate to obtuse, the base also variable - narrowing gradually to obtuse, pale green, dull and glabrous above, coarsely hispidulous underneath, veins prominent, midrib impressed and muricate, petioles 8 to 16 cm long, muricate.
Sources:
- Hillebrand, 1888;
- Rock, 1913 (as Cyanea wailauensis);
- Rock, 1919 (including var. glabrata);
- Rock, 1919 (as Cyanea wailauensis);
- Degener, 1934 (including forma glabrata);
- Wimmer, 1943 (as Cy. ovatisepala and as Cyanea wailauensis);
- Wimmer, 1943 (including forma glabrata and var. latifolia);
- Wagner et al., 1990.