97 
The Pardanthopsis Section 
•Bot. Mag. t. 6428 (1879). 
Maxim. M£l. Biol. x. p. 738 (1877). 
in Bull. Acad. Pit. XXVI. p. 540 (1880). 
Franch. PI. David, p. 298 (1884). 
Synonyms. 
/. pomeridiana , Fischer ex Ledeb. FI. Ross, rv. p. 106 (1853). 
Klatt in Linnaea, xxxiv. p. 612 (1866). 
Pardanthus dichotomus, Ledeb. FI. Ross, IV. p. 106 (1853). 
Evansia dichotoma and vespertina, Decaisne in Bull. Soc. Bot. de Fr. XX. 300 (1873). 
DISTRIBUTION. From Irkutsk and Transbaikalia through Manchuria into Northern China as far south as 
Shensi, Shantung and Kiangsu. 
Irkutsk, 18 — , Besser (V) (K). 
Dahuria near the Rivers Ingoda and Argun, 177-, Pallas (LS) (BM) (K) (C) (V). 
in mountain meadows, 1830, Turczaninow (K). 
1831, Steven (V). 
1836, Fischer (P). 
1890, Karo (E). 
near River Argun, 1830? Turczaninow (V). 
Nertschinsk, 1889, Karo (K) (B). 
Mongolia, South, 1871, Przewaldski (K). 
Ordos, 1884, Potanin (E) (B). 
East (Gehol), 18 — , David (no. 2165) (P). 
Mukden (Peiling), 1887, Webster (K). 
1897, Komarov (K). 
China. Chi-li, Pekin, 1865, Williams (K) (BM). 
1868-71, Bushell (K). 
1881, Bretschneider (BM) (K) (B). 
1885, Carls (E). 
1888, Bodinier (L). 
Shensi, North, 1901, Giraldi (nos. 6697, 6698) (B). 
Shantung; Chefu, 1880, Forbes (BM). 
1869, Williamson (E). 
Kiangsu ; Peitaho, 1910, Bayley Balfour (E). 
Diagnosis. 
I. dichotoma Pardanthopsis ; folia alternate equitantia ; caulis valde ramosus, ramis saepe binis ex 
eodem loco productis ; spathae multiflorae, floribus peracta fecundatione spiraliter contortis ; semina 
utrinque in alam expansa. 
Description. 
Rootstock, a slender rhizome. 
Leaves, blue green with a distinct white edge, about 6—8 in number arranged in a fan-shaped 
cluster, clasping the base of the stem; 8 — 12 in. x i£in. at the middle, the lowest leaves being some- 
what falcate. 
Stem, rather more than 2 ft. in height, much branched, the peduncles often issuing in pairs of equal 
length at the same point, with a short bract at each fork. 
Spathes, not exceeding £ in., wholly scarious, 3 — 5 flowered. 
Pedicel, up to 1 in. or i* in. long, nearly semicircular in section, articulated at the base of the 
ovary. 
Ovary, bright green, cylindrical, apt to drop at the slightest touch, when the flower fades unless 
fertilisation has taken place. 
Tube, extremely short, about ^ in. 
Falls. The broadly cuneate haft is not separated by any constriction from the almost square blade, 
which is held horizontally, while the haft rises at an angle of about 60 , as do also the standards. The 
segments thus form a kind of funnel round the style branches. The haft is barred with stripes of 
yellowish brown along the edges and flecked with purple on a white ground along the centre. The 
blade is white, with a few brown-purple spots. 
Standards. The blade is of a rounded oblong and the haft is channelled, the whole segment being 
much shorter than the falls. The colour of the blade is a grey white faintly striped with purple, and 
the haft is much dotted with brown purple. 
Styles, almost oval in outline, the central ridge being speckled with brown purple and the wings 
colourless and semi-transparent. The styles are connate for a short distance above the base of the 
segments. 
Crests, linear, very narrow but relatively long. 
Stigma, with two prominent teeth. 
Filaments, yellowish white, minutely spotted with purple. 
Anthers, colourless along the centre but with dark brown edges. 
D. 
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