98 ANNALS OF ROYAL BOTANIC GARDEN, CALCUTTA. 
various parts of China. It has consequently been possible to trace in detail the gradual transitions 
between the many varieties which, however much the extreme forms may differ from each other, con- 
stitute one uninterrupted series. The most important links are formed by varieties from Mongolia and 
South-Eastern Tibet, the invasion of the Himalaya by D. grandiflorum having evidently taken place from 
the side of Central and Eastern Tibet. None of the characters by which D, ceruleum has been supposed 
to be distinguished from D. grandiflorum proves constant on detailed examination, as will be seen from 
the description of the varieties of D. grandiflorum to which we now proceed. 
Var. a. LATISECTA, Marim.; stem erect, middle-sized or elongate (15—80 em.), much branched; 
laciniæ of leaves ovate or oftener lanceolate, acute or obtuse; sepals minutely pubescent, 
azure; follicles 3, recurved nearly from the middle.—Sechuan, Kansu. 
Var. В. cmiwENsis, Fischer; tall, erect, rather rigid; laciniw broad-linear; bracteoles minute 
linear, somewhat remote from flower; sepals minutely pubescent outside; lamina of anterior 
staminodes suborbicular, entire, glabrous on back and edges; carpels 3.—Siberia, China. 
Var. y. PUBIFLORA, Tures.; stem prostrate, like peduncles and sepals densely minutely pubescent ; 
laciniæ elongate, narrow-linear; anterior staminodes suborbicular, entire.—Baical region. 
Var. 8. Їлххжї; stem tall, erect, like peduncles and sepals minutely crisp-pubescent; lacini 
narrow-linear, elongate; bracteoles linear, small, more or less remote from flower; lamina 
of anterior staminodes suborbicular, entire or emarginate, glabrous below, sometimes 
ciliate; carpels 8 (—4); follicles straight or recurved at the apex.—Siberia, Mongolia, 
Northern and Central China proper, Yarkand. 
Var. е. Ротлміхі, P. B.; as in 9, but lamina of anterior staminodes obovate-oblong, emargin- 
ate or bilobed, ciliate, more or less hairy below; sepals outside near the base minutely 
pubescent or sub-villose.—Setchwan (Potanin /). 
Var. Ё wumaonensis, Е. Huth; stem erect, subglabrous, 40—60 em. high, 3—4 mm. thick 
near base; leaves 3-partite, middle division 3-fid, lateral ones divided into 3 or more 
segments, lacinie broad-linear, the longer ones sometimes 2 em. long by 2 mm. broad; 
inflorescence racemose-panieulate, many-flowered; pedicels villous; bracteoles small, linear 
remote from flower; sepals 11—18 mm. long, sky-blue, villous outside; lamina of anterior 
staminodes suborbicular, subentire or deeply bilobed, yellow-bearded, blue; carpels 3.— 
Kumaon: Byäus, near Kutti 13—14,000° (Duthie /); Därma, іп the Nipchang valley 
13—14,000^ (Duthie !); on Mulapa Gadh 11—12,000' feet (Durhie!); Nipal; on os 
Gädh, 10—11,000’ (Duthie 1). 
Var. n. TENUICAULIS, P. B.; stem very slender (30—50 cm. high, 1—1:5 mm. thick), sparse- 
ly beset with retrorse hairs; leaves remote, moderately cut, lacinie lanceolate-linear, 
subobtuse, the longer ones 15—35 mm. long, 2—3 mm. broad; inflorescence racemose, 
very lax, few-flowered; bracteoles linear, remote from the flowers; peduncles and sepals 
covered with short hairs; sepals blue or purple; lamina of anterior stamino¢ es obovate- 
oblong, bilobed or nearly bifid, hirsute on upper surface, rarely nearly bearded ; carpels 
3.—Chumbi: near Phemü and Rinchingong (King’s collectors 1). 
Var. 0. Плут, Franchet pro sp.; middle-sized, hispidulous with longish adpressed ог spread- 
| ing hairs; stems slender, ascending; lacinis of upper leaves linear; flowers solitary ог 
subeorymbose ; peduncles shortly retrorse-pubescent; sepals puberulous; anterior staminodes 
| oblong, bilobed, near the base yellow-bearded; carpels 3 (?).—Tibet, prov. Мариа. 
Var. в sETCHWANzNSIS, P. В.; a small slender plant, scarcely branched; stem and peduncles 
 retrorse-pilose, indumentum below the sparsely hairy sepals rather longer; lacini® linear- 
lanceolate; bracteoles elliptic-oblong, opposite, just below the sepals; lamina of anterior 
staminodes ovate-oblong, deeply bilobed, slightly hairy; carpels 3.—Setchwan (Henry 1). 
This variety, like 5, р, £ and others, might be considered a species of the second order. 
Var. к. KUNAWARENSIS (= D. сегиеит of Jacquemont); stem 80—50 ош. high, 8—5 mm. 
thick; leaves little or not crowded near the base, much divided; lacini®e linear, acute 
or subacute, 5—20 mm. long, 1—2 mm. broad; inflorescence paniculate-corymbose, 
