Diastatea, Scheidw.

Johnson, Elizabeth P. & Ayers, Tina J., 2022, Molecular Phylogeny and Taxonomic Revision of the Genus Diastatea (Campanulaceae: Lobelioideae), Systematic Botany (Basel, Switzerland) 47 (1), pp. 61-84 : 81

publication ID

https://doi.org/10.1600/036364422X16442668423392

DOI

https://doi.org/10.5281/zenodo.15608269

persistent identifier

https://treatment.plazi.org/id/03F68C0F-FFB2-BD55-FD1D-FBE09BABF937

treatment provided by

Felipe

scientific name

Diastatea
status

 

KEY TO THE GENUS DIASTATEA View in CoL

1. Middle and upper cauline leaves narrowly elliptic to linear, glabrous; corolla often gibbous at base, if not gibbous, then leaf bases not decurrent and hypanthium expanded to encompass one-third to one-half of capsule in fruit.........................................2 ( Diastatea subg. Angustifolia )

2. Stems evenly and minutely puberulent below, leaf bases not decurrent............................................................. D. aptera

2. Stems glabrous, decurrent leaf bases forming small, winged projections on stems (visible at 20 3 magnification).............................. 3

3. Teeth on leaf margins prominent and more or less regularly spaced 1–1.5 mm apart; corolla tube funnelform, flaring distally...... D. expansa

3. Teeth on leaf margins minute or reduced to marginal callosities, usually more than 2 mm apart; corolla tube narrowly cylindrical.............................................................................................................4 ( D. tenera )

4. Corolla tube 3.9–8 mm long, lower corolla lobes (1.8–) 3.6–6.7 mm long, stamens 4.7–11.5 mm long............... D. tenera subsp. tenera

4. Corolla tube 8–13.5 mm, lower corolla lobes 6–11.3 mm long, stamens 11.2–15 mm long.................... D. tenera subsp. durangensis

1. Middle and upper cauline leaves ovate or lanceolate, if narrowly elliptic then pubescent at least proximally; corolla not gibbous at base, hypanthium not expanded..................................................................................................... 5 ( Diastatea subg. Diastatea )

5. Cauline leaves broadly ovate to broadly lanceolate...................................................................................... 6

6. Corolla minute, corolla tube 2.4–4.5 mm long; fruit usually less than 6 mm long (rarely 8 mm)................................ D. micrantha

6. Corolla conspicuous, corolla tube (5–) 6.2–9.7 mm long; fruit 6 mm or longer.......................................................... 7

7. Calyx margins prominently ciliate..................................................................................... D. ciliata

7. Calyx margins glabrous.............................................................................................. D. virgata

5. Cauline leaves narrowly elliptic, 0.5 cm wide or less..................................................................................... 8

8. Calyx lobes glabrous or only minutely ciliate, one-half to two-thirds length of fruit or less (rarely nearly reaching end of fruit), found in the Mexican states of Guerrero and Oaxaca ................................................................................ D. maximiliana

8. Calyx lobes strongly ciliate, more or less equal to fruit in length, found from Guatemala south to Costa Rica.................. D. costaricensis

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Asterales

Family

Campanulaceae

SubGenus

Diastatea

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