ll 
Tas. 8640. 
IRIS BRACTEATA. 
Oregon. 
TripacgEaE. Tribe IRIDEAE. 
Iris, Linn. ; Benth, et Hook. f. Gen. Plant. vol. iii. p. 686. 
Iris bracteata, S. Watson in Proc. Amer. Acad. vol. xx. (1885), p. 375 et in 
Garden and Forest, 1888, p. 438, fig. 8; Dykes in Gard. Chron. 1912, 
vol. lii. p. 338, fig. 148, et Genus Iris, p. 88; affinis I. Purdyi, Eastw., sed 
pedicello longo, perianthii tubo brevi infundibuliformi, foliis cum quoque 
turione paucioribus distincta. 
Herba rhizomate gracili oblique descendente cataphyllorum residuis induratis 
dense obtecto. T’wriones foliigeri basi cataphyllis firmis brunneis imbri- 
catis ovatis vel oblongis acutis tecti. Folia circiter 4, quorum duo valde 
abbreviata, fere tota longitudine vaginantia, tertium praecedente fere duplo 
longius ad 2 vaginans, summum ad 40 cm. longum non nisi ima basi 
vaginans, exteriora basi purpurascentia, caeterum viridia, omnia linearia 
acuta, majora ad 8-9 mm. lata, uno latere viridia, altero subglauca vel 
paulo pallidiora laevia, nervis tenuibus prominentibus primariis circiter 
8-10. Caules florentes ad spatharum bases 10-15 cm. alti, basi cata- 
phyllis more turiorum obtecti; cataphylla in folia ad vaginas 4-8 cm. longas 
redacta circiter3 abeuntia. Spathae lanceolatae, acuminatae, 5-6 cm. longae, 
virides, anguste membranaceo-marginatae, tenuiter carinatae. lores 2; 
pedicelli 45cm. longi. Perigoniz tubus infundibuliformis, 5-6 mm. longus ; 
segmenta exteriora limbo oblongo-ovato patulo 8°5 em. longo 2 cm. lato 
luteo nervis 4 brunneo-purpureis exterioribus marginem versus venas eodem 
colore emittentibus eximie ornato sensim in unguem latiusculum 1°5 cm. 
longum abeunte; segmenta interiora erecta, limbo oblongo obtuso, in 
unguem angustum attenuata, tota lutea. Antherae luteae, 14 mm. longae ; 
filamenta brevia, pilosula. Ovariwm oblongum, 1-1°5 cm. longum; styli 
rami lati, lineares, crista majuscula subquadrata, lobis subcrenulatis ; 
stigma late triangulare. Capswla oblonga, teres. Semina cubico-cuneata. 
—O. Srapr. 
The subject of our plate, Jris bracteata, has been in 
cultivation in the Iris Collection at Kew for a consider- 
able number of years, and the material for our figure 
has been obtained from one of the oldest plants therein. 
The species was discovered in 1884 by Mr. T. Howell, of 
Arthur, Oregon, in the Walds and Dear Greek Mountains 
of Josephine County close to the southern boundary of 
the state, where it flowers in the latter part of April and 
in May. Under the cultural treatment suitable for most 
species of /ris it thrives well in this country, flowering a 
fortnight later than it does in its native habitat. 
DecEMBER, 1915. 
