; 
E 
Tas. 5298. 
IRIS LONGIPETALA. 
dl 
Long-petaled Iris. 
Nat. Ord. IntprEx.—TRIANDRIA TRIGYNIA. 
Gen. Char. Perigonium corollinum superum ; ¢udo brevi, limbi 6-partiti laciniis 
exterioribus seepissime reflexo et basi barbatis vel rarius nudis ; interioribus 
erectis, sepe minoribus v. nonnunquam minimis. Stamina 3, perigonii laciniis 
exterioribus basi inserta ; filamenta filiformia v. subulata ; anthere oblonge, basi- 
fixe. Ovarium inferum, obsolete trigonum, triloculare. Ovuda plurima, in locu- 
lorum angulo centrali biseriata, horizontalia, anatropa. Stylus triqueter, basi 
sepius cum perigonii tubo connatus ; stigmata 3, petaloideo-dilatata, supra cari- 
nata, subtus canaliculata, plica transversa bilabiata, staminibus opposita. Capsula 
coriacea, trigona vel hexagona, trilocularis, apice loculicido-trivalvis. Semina 
plurima, horizontalia, compresso-plana, marginata; raphe tenui, intra testam 
laxam libera. Zméryo axilis, albumine carnoso multo brevior, extremitate radi- 
culari umbilicum attingente, infera.—Herbee perennes, in hemisphera boreali tem- 
perata obvia, nonnulle aquatica ; rhizomate tuberoso vel rarius bulboso ; foliis 
gramineis, interdum 4-angularibus, sepissime ensatis, equitantibus; caule sepius 
compresso, ramoso ; floribus speciosis, magnis, terminalibus, solitariis v. spicatis ; 
spathis uni-multifloris. Endl. 
Iris longipetala ; imberbis, foliis angustis (sub-}-unciam latis) erectis acutis 
caulem solidum bracteatum aliquantulum superantibus, spatha bi-triflora, 
valvis acutis (circiter 8}-uncialibus) germen oblongum superantibus, pedun- 
culis sesquiuncialibus tubo brevi (3-unc. libero vix ;*; solido), petalis se- 
palisque angustis longitudine subaequalibus (circiter 2} uncias) cristas styli 
duplo fere superantibus, perianthii colore albo pulcherrime purpureo-venoso 
medio flavo. Herd. 
Iris longipetala. Herb. in Hook. et drn. Bot. of Beech. Voy. p. 395. _ 
Two new species of Jris were detected by the naturalists of 
Captain Beechey’s Voyage of H. M. surveying ship Sulphur, 
in California, both very distinct from any other known of this 
extensive genus: these are Jris Douglasiana, Herbert in Hook. 
and Arn. Bot. of Beechey’s Voyage, and I. longipetala, I. c. p. 
395. Tubers of the latter species have been received at the 
Royal Horticultural Society, and a specimen was kindly sent to : | 
us by Mr. Thomas Moore, from the garden at Chiswick, last 
summer (1861), from which the accompanying figure is taken. 
It seems quite hardy, and will prove a great ornament to our 
flower-gardens. 
FEBRUARY Ist, 1862. 
