1	"Radical leaves absent; cauline leaves 2, usually opposite, rarely subopposie"	2
1	"Radical or basal leaves pesent; culine leaves 0-many, variously arranged"	3
2	"Upper petals with winged margins, wide, emarginate; flowers large, showy, with highly curved spurs"	"Corydalis diphylla"
2	"Upper petals without winged margins, narrow, acute or slightly acuminate; flowers not show, spurs not as curved"	"Corydalis murreyana"
3	"Rootstocks tuberous, with a few scales; flowers usually blue or bluish, rarely whitish"	4
3	"Rootsocks slender, often fusiform, rarely ending in tuberous roots, usually without scales; flowers usually yellow"	5
4	"Rootstocks bulblike  with few scales and tuberous branches below; cauline leaves 1-2, above the middle of the stems, often suopposite; capsules linear-oblong, 15-18 mm long, about 3 mm wide"	"Corydalis cashmeriana"
4	"Rootstocks of a divided tuber, usually with 2-3 scale leaves between the tuber and lowest leaf"	"Corydalis alpestris"
5	"Rootstocks slender, narrow, elongated rhizomes with a few scattered scale-leaves, oftenending in a spindle-shaped tuber"	"Corydalis falconeri"
5	"Rootstocks thickened, fusiform, or slender, without scale-leaves, rarely very short or tap-rooted plants"	6
6	"Rootstocks almost absent or very short and branched with tap roots"	7
6	"Rootstocks thickened, fusiform r slender, ften branched and covereed with sheathing, withered leaf-bases"	8
7	"Capsules oblong-obovate; terminal leaf segments extended"	"Corydalis cornuta"
7	"Capsules linear, rarely slightly oblong; terminal leaf segments not extended"	"Corydalis stewartii"
8	"Upper petals dorsally not winged; spurs very short, about 1/4 the flower length, downcurved and gibbous; bracts scarious or membranous; bud apices conspicuosly globose with mucronulate apices and noarrowed, slender limbs"	9
8	"Upper petals dorsally winged; spurs 1/3-3/4 as long as the flower length, usually as long as the blade of the upper pretal, downcurved to almost straight, not gibbous at the base; bu apices not so globose and more or less winged limbs"	14
9	"Leaves simply pinnate; pinnae fan-shaped, obovate-suborbicular, often trilobulate and denticulate"	10
9	"Leaves 2-3-pinnatisect; pinnae elongated, much dissected with ultimate segments short, ovate to sublinear"	12
10	"Sepals suborbicular to ovate with lacerate margins, much dissected and with threadlike short appendages"	"Corydalis flabellata"
10	"Sepals ovate to linear, entire or denticulate, sometimes slightly lacerate below"	11
11	"Sepals 3-5 mm long, ovate-linear, sublacerate or muchh dissected below; bracts as long as the pedicels"	"Corydalis adiantifolia"
11	"Sepals 1 mm long, ovate, almost entire; bracts shorter than pedicels, about 2 mm long"	"Corydalis schelesnowiana"
12	"Sepals 8-12 mm long, linear with tailed apices"	"Corydalis urosepala"
12	"Sepals 2-4 mm long, ovate-linear, acute, without tailed apices"	13
13	"Inflorescences much exceeding the radical leaves; stems leafy"	"Corydalis stricta"
13	"Inflorescences not exceedingthe radical leaves; stems leafless"	"Corydalis rupestris"
14	"Spurs more than half, usually about 3/4 the length of the flowers or longer than the lamina of upper petals"	15
14	"Spurs up to half as long as the flowers or as long or shorter than the lamina of the upper petals"	16
15	"Bracts elongated, linear and entire; ultimate leaf segments linear, (5--)815 mm long"	"Corydalis erithmifolia"
15	"Bracts elongate but much dissected above with linea segments to almost entire; ultimate leaf segments ovate-oblong, 2-5(-7) mm long"	"Corydalis pseudoerithmifolia"
16	"Spura less than 1/2 as long as the length of the flower, sually 1/3 as long, or shorter than the lamina of the upper petals17"	17
16	"Spurs 1/2 as long as the flower or as long as the lamina of the upper petals"	20
17	"Leaves 3-lobed with crenulate margins; fruits very inflated, broadly ovoid to suborbicular, about 2 cm in diameter"	"Corydalis crassifolia"
17	"Leaf segments many, narrow, ovate to oblong or linear, not so inflated"	18
18	"Spurs narrow, slender, somewhat acute; leaf segments oblong to sub-orbicular"	"Corydalis longipes"
18	"Spurs wide, blunt or obtuse; leaf segments linear"	19
19	"Leaf segments less than 1 mm wide, linear, acute; bracts much dissected, with thin segments"	"Corydalis meifolia"
19	"Leaf segments linear-oblong, 1-1.5 mm wide, apices acute to obtuse of almost round; bracts usually entire or the lower bracts wide and denticulate"	"Corydalis sikkimensis"
20	"Ultimte segments of the lleaves linear, small; bracts segmented like the leaves but smaller"	21
20	"Ultimate segments of the leaves ovate, oblong, or suborbicular; upper bracts entire, lower bracts denticulate or dissected"	22
21	"Plants short, condensed; petioles and leaf bases broad or sheathing"	"Corydalis hendersonii"
21	"Plants not short, nor condensed; only the leaf bases, not the petioles, sheathing"	"Corydalis pulchella"
22	"Plants glaucous, more or less glandular-pilose; leaf segments oblong or sub-orbicular; capsules oblong"	23
22	"Plants subglaucous or somehat green; leaf segmentslinear ovate, acute; capsules short, eilliptic"	24
23	":eaf segments oblong to linear; inflorescnces with 3-8(-12) flowers, not exceeding the radical leaves; fruits 10-12 mm long with styles about 1/2 as long"	"Corydalis tibetica"
23	"Leaf segments ovate-oblong to suborbicular; inflorescences with more than 12 flowers, conspicuously exceeding the radical leaces; fruits 10-12 mm long with styles about 1/2 as long or less"	"Corydalis gortschakovii"
24	"Inflorescences exceeding the radical leaves; stems leafy, branched; leaf segments small; bracts linearly segment"	25
24	"Inflorescences not or hardly exceeding the radical leaves; stems simple, 0-2 leaved; leaf segments more or less wide; bracts entires to denticulate, rarely segmented"	27
25	"Inflorescences neither thyrsoid nor branched below"	"Corydalis vaginans"
25	"Inflorescences more or less thyrsoid, often branched below"	26
26	"Capsules ellipsoid, 5-7 mm long, about 4 mm wide; flower spurs robust; leaf segments ovate; inflorescences with 30-40 densely packed flowers"	"Corydalis thyrsifolora"
26	"Capsules oblong, 8-10 mm long, 2.5-3 mm wide; flower spurs slender; leaf segments ovate; infloresences with 15-20, more widely spaced, flowers"	"Corydalis pakistanica"
27	"Cauline leaves usually 4, in 2 pairs, opposite or subopposite; flowers 7-9 mm wide; styles about 1/2 as long as the ovate capsules"	"Corydalis clarkei"
27	"Cauline leaves usually 2, opposite, below ,id-stem; flowers 3-4 mm wide; styles about 1/4 as long as the oblong capsules"	"Corydalis govaniana"