Salvia sect. Macrostachyae (Bentham, 1848) Epling, 1937

Fragoso-Martínez, Itzi, Martínez-Gordillo, Martha, Uría, Rolando, Salazar, Gerardo A., Peñafiel, Marcia, Tobar, Francisco & Montesinos, Kabir, 2021, Notes on Salvia subgenus Calosphace section Macrostachyae (Lamiaceae) from Ecuador with a new record, Phytotaxa 521 (2), pp. 71-79 : 77

Key to species of Salvia sect. Macrostachyae

1. Bracts conduplicate ........................................................................................................................................................... S. atrocalyx

- Bracts applanate..................................................................................................................................................................................2

2. Corolla white, occasionally with pinkish to reddish tones; stamen connectives and style pink or light red ............... S. psilostachya

- Corolla blue, indigo or purple; stamen connectives and style blue, purple or white .........................................................................3

3. Mericarps lacking wings; bracts caducous ...................................................................................................................... S. camporum

- Mericarps winged; bracts persistent or late caducous ........................................................................................................................4

4. Leaf blades orbicular; bracts orbicular, apex apiculate; corolla blue ........................................................................ S. macrostachya

- Leaf blades ovate or ovate-lanceolate; bracts ovate, apex acuminate; corolla burgundy or deep purple ..........................................5

5. Stamen connectives and style white; apex of the mericarp entire, with a single deltoid projection ....................................... S. alata

- Stamen connectives and style purple; apex of the mericarp bifurcated, with two deltoid projections .............................. S. speciosa