Salvia subsect. Perennes, Hu et al., 2018

Wei, Yukun K, Pendry, Colin A, Huang, YanBo, Ge, BinJie & Xiao, HanWen, 2021, SALVIA SUBVIOLACEA, A NEW SPECIES FROM THE HIMALAYAS-HENGDUAN MOUNTAINS, CHINA, Edinburgh Journal of Botany 78 (334), pp. 1-9 : 8-9

Key to the Chinese species of the short-connective and big-flower group of Salvia subsect. Perennes

1a. Corolla straight or curving slightly upwards, tube almost equally wide at middle and mouth ____________________________________________________________________________ 2

1b. Corolla curving upwards, sometimes somewhat S-shaped, much wider at mouth than in the middle ______________________________________________________________________ 9

2a. Connective less than 1/2 the length of the filament _________________________________ 3

2b. Connective more than 1/2 the length of the filament ________________________________ 4

3a. Corolla blue _________________________________________________________ S. prattii Hemsl.

3b. Corolla white to cream ____________________________________________ S. potaninii Krylov

4a. Corolla length shorter than 3 cm ___________________________________________________ 5

4b. Corolla length longer than 3 cm ____________________________________________________ 6

5a. Leaves ovate with cordate base, pubescent above. Corolla curving slightly upwards, blue to white ________________________________________________ S. himmelbaurii E.Peter

5b. Leaves circular-cordate to ovate-cordate, villous above. Corolla straight, purple to pale purple _____________________________________________________ S. paohsingensis C.Y.Wu

6a. Calyx campanulate. Corolla blue ____________________________________________ S. wardii

6b. Calyx tubular-campanulate. Corolla yellow or deep purple to light purple ____________ 7

7a. Corolla yellow. Leaf orbicular _____________________________ S. maximowicziana Hemsl.

7b. Corolla blue to purple. Leaf cordate to narrowly cordate ____________________________ 8

8a. Inflorescence dense with short internodes, densely villose. Corolla deep purple S. dolichantha

8b. Inflorescence relatively lax, pubescent. Corolla pale blue-purple to light purple S. subviolacea

9a. Plant 20–30 cm tall and usually unbranched. Corolla curving upwards _____________ 10

9b. Plant 30–60 cm tall, branched. Corolla curving upwards, somewhat S-shaped ______ 11

10a. Leaf elliptic. Corolla pale purple or pink _______________________________ S. aerea H.Lév.

10b. Leaf ovate. Corolla white to pale yellow ________________________ S. cyclostegia E.Peter

11a. Leaf tomentose __________________________________________________________________ 12

11b. Leaf sparsely pubescent __________________________________________________________ 13

12a. Corolla pale yellow. Leaf oblong _________________________________ S. digitaloides Diels

12b. Corolla purple, pale purple or purplish red. Leaf broadly lanceolate, hastate or ovate S. przewalskii 13a. Cauline leaves present __________________________________________ S. atrorubra C.Y.Wu

13b. Leaves all basal __________________________________________________________________ 14

14a. Bracts prominent, orbicular. Inflorescence compacted, usually green S. kiaometiensis H.Lév.

14b. Bracts small, lanceolate. Inflorescence lax, usually purple __________ S. castanea Diels.