416 Vermischte neue Diagnosen. 
columna staminea infra apicem 5-dentatum antherifera; ovarium 5-locu- 
lare, loculis 1--3 ovulatis; styli rami 5, suberecti, apice in stigmata 
capitata dilatati; capsula lignea loculide 5-valvis, endocarpio chartaceo 
solubili; semina reniformia, tomento albescenti-cano induta. Arbores 
mediocres cum tomento stellato; folia cordata, inaequaliter crenata; flores 
solitarii vel plures ex axillis foliorum; colore rubido obscuro vel luteo; 
calyx deciduus in fructibus maturis. — This proposed new genus con- 
sisting of 3 species peculiar to the dry sections of Hawaii and Maui, is 
nearest to Hibiscus from which it differs in its quite different flowers, 
deciduous calyx and woody capsule. 
839. Hibiscadelphus Giffardianus Rock, l. c. p. 10, pl 4. — Arbor 
7 m alta, iruncus 0,3 m diam. cortice albineo glabrato, ramis robustis 
teretis; foliis longe petiolatis, orbiculatis rustice acuminatis basi cordatis, 
tomento stellato utrinque indutis; palmato — septemnervatis, cum glandi- 
bus hispidis in angulis nervorum; stipulis parvis, triangulatis caducis; 
floribus solitariis vel pluribus, bracteolis 5—7 linearibus liberis; calyce 
saccato profunde et inaequaliter 2 - 3-fido, lobis aeuminatis, extus pilis 
stellatis induto, intus glabro; corolla convoluta inflexa dependente in 
pedicellis 2—3 cm longis; petalis erectis obliquis oblongis, apice acutis 
5—6 cm longis, partibus petalorum expositis pilis stellatis dense punc- 
tulatis; columna staminea petalis longiore, ad basin hispida, tubo costato 
tractu longo filamentis longis affixis; ovario glabro; stigmatibus capitatis; 
capsula lignea 4—5 cm X 2—2,5 cm, pro genere maxima, oblonga, ru- 
gosa extus pilis stellatis luteis induta; endocarpio chartaceo splendente 
tomentuloso, seminibus magnis lanatis. — In archipelagi Hawaiiensis 
insula Hawaii: J. F. Rock leg. in declivibus montis Mauna Loa orientem 
versus 4300 pedes s. m. fr. et fl. Aprilis et Jun. a. 1911 (no. 8713). 
840. Hibiscadelphus Wilderianus Rock, l. c., p. 12, pl. 5. — Arbor 
5 m, trunco erecto; foliis orbiculatis vel trilobatis cordatis, apice acutis, 
in petiolis stramineis 7—10 em longis, palmato-quinque- rarius septem- 
nervatis, supra puberulis subtus pilis minutis stellatis inspersis, nervis 
prominentibus hispidis; stipulis parvis subulatis puberulis; floribus soli- 
tariis in pedicellis 4 cm longis; bracteolis linearis 2 cm longis, uni- 
nerviatis liberis; calyce saccato inaequilatero trilobato, extus hirsuto 
intus puberulo, lobis acuminatis (flores aperti ignoti) Petalis luteis in 
gemma; capsula ovoidea 8,5 X 3 cm, nigranta tuberculata, stellato his- 
pida lignosa. — In insula Maui: J. F. Rock leg. in declivibus montis 
Haleakala meridiem versus Nov. a. 1910 (no. 8663). 
841. Hibiscadelphus Hualalaiensis Rock, |. c., p. 14, pl. 6. — Arbor 5—1 m 
alta, trunco erecto, 0,3 cm diam. cortice albineo, glabrato; rami teretes, 
cum foliis novellis dense hirsuti, foliis reniformi-cordatis in petiolis 
10--16 em longis, supra pilis stellatis inspersis, subtus tomentosis (flores 
ignoti) capsula parva ovata 2 X 1,5 cm pilis stellatis flavescentibus dense 
induta, — In insula Hawaii: J. F. Rock leg. in declivibus montis Hua- 
lalai occidentum versus Jun. a. 1909 (no. 3915). 
