Lamourouxia, Kunth, 1817

Francisco-Gutiérrez, Antonio, Ruiz-Sanchez, Eduardo, González, Dolores & Lira-Noriega, Andrés, 2023, Lamourouxia (Orobanchaceae) of Mexico, Phytotaxa 582 (1), pp. 1921-1935 : 1921-1935

publication ID

https://doi.org/ 10.11646/phytotaxa.582.1.1

DOI

https://doi.org/10.5281/zenodo.7618476

persistent identifier

https://treatment.plazi.org/id/F613E609-4971-FF90-78CF-D3BDFA499AE5

treatment provided by

Plazi

scientific name

Lamourouxia
status

 

Morphological keys based on reproductive characters for Lamourouxia View in CoL View at ENA sections present in Mexico (adapted from Ernst 1972)

1. Stamens almost equal in shape and length raising the apex of the corolla; four anthers fertile and similar in size, connivent near the apex of the corolla or exserted........................................................................................................................... Section Lamourouxia View in CoL

- Stamens strongly unequal, one pair of filaments near the apex of the corolla and other pair shorter near the half of the length of the corolla; two large anthers fertile near the apex of the corolla, two smaller included anthers rudimentary, fertile or sterile, deeply included or absent...............................................................................................................................................................................2

2. Fertile anthers four, the smaller pair rarely sterile.............................................................................................. Section Hemispadon

- Fertile anthers two, the smaller pair rarely fertile or absent................................................................................ Section Adelphidion

Morphological keys based on vegetative and reproductive characters to the Lamourouxia species present in Mexico

Section Adelphidion

Section with four species with disjunct distribution. Two species distributed in Colombia, Ecuador, and Peru. Two endemic species from central Mexico:

1. Leaves linear to subulate, margin entire or minutely incised; calyx with black or brown dots on surface; calyx lobes with margin entire................................................................................................................................................................................ L. dasyantha View in CoL

- Leaves ovate, margin dentate; calyx without dots on surface; calyx lobes with margin dentate ................................ L. brachyantha View in CoL

Section Hemispadon

Section with 15 species distributed from northern Mexico to Panama. 14 species are distributed in Mexico, 11 of them are endemic.

1. Plants with inflorescences reclined and inverted flowers.................................................................................................... L. barbata View in CoL

- Plants with inflorescences erect and flowers not inverted..................................................................................................................2

2. Calyx lobes with margin dentate ............................................................................................................................... L. rhinanthifolia View in CoL

- Calyx lobes with margin entire...........................................................................................................................................................3

3. Leaves coriaceous or strongly coriaceous ..........................................................................................................................................4

- Leaves membranous or papyraceous..................................................................................................................................................5

4. Leaves pilose, non-glandular........................................................................................................................................... L. avendanoi View in CoL

- Leaves glandular-tomentose................................................................................................................................................. L. viscosa View in CoL

5. Leaves 29–38 mm width ....................................................................................................................................................... L. smithii View in CoL

- Leaves 2–25 mm width ......................................................................................................................................................................6

6. Pedicels claviform ............................................................................................................................................................... L. gracilis View in CoL

- Pedicels slender ..................................................................................................................................................................................7

7. Leaves with margin entire ............................................................................................................................................. L. integerrima View in CoL

- Leaves with margin crenate to dentate or serrate ...............................................................................................................................8

8. Calyx lobes 10–12 mm long; lobes of the lower lip of the corolla 4.3–9 mm long.......................................................... L. jaliscana View in CoL

- Calyx lobes 1–8.2 mm long; lobes of the lower lip of the corolla 1–4 mm long...............................................................................9

9. Calyx tubular ....................................................................................................................................................................................10

- Calyx campanulate ...........................................................................................................................................................................11

10. Leaves with base attenuate to cuneate, one type of bracts along inflorescence .................................................................. L. nelsonii View in CoL

- Leaves with base truncate, two types of bracts along inflorescence ................................................................................... L. pacifica View in CoL

11. Leaves 6–10 mm long .................................................................................................................................................. L. microphylla View in CoL

- Leaves 10–32 mm long ....................................................................................................................................................................12

12. Corolla 26–35 mm long....................................................................................................................................................... L. colimae View in CoL

- Corolla 40–55 mm long....................................................................................................................................................................13

13. Leaves 3–8 mm width, two types of bracts along inflorescence........................................................................................... L. dispar View in CoL

- Leaves 1–1.3 mm width, one type of bracts along inflorescence..................................................................................... L. tenuifolia View in CoL

Section Lamourouxia

Section with 12 species distributed from northern Mexico to Guatemala. 11 species distributed in Mexico, eight of them are endemic.

1. Plants with inflorescences reclined and inverted flowers...................................................................................................................2

- Plants with Inflorescences erect and flowers not inverted .................................................................................................................3

2. Bracts orbicular to broadly elliptic.......................................................................................................................................... L. ovata View in CoL

- Bracts lanceolate to narrowly rhomboid.......................................................................................................................... L. xalapensis View in CoL

3. Leaves deeply divided ....................................................................................................................................................... L. multifida View in CoL

- Leaves entire.......................................................................................................................................................................................4

4. Pedicels 9–21 mm long ......................................................................................................................................................................5

- Pedicels 1–7 mm long ........................................................................................................................................................................6

5. Stems woody, pedicels s-shaped, leaves lanceolate to elliptic ...................................................................................... L. stenoglossa View in CoL

- Stems herbaceous, pedicels arching forward, leaves broadly ovate............................................................................... L. macrantha View in CoL

6. Leaves 28–56 mm long, plants restricted to northwestern Mexico................................................................................. L. longiflora View in CoL

- Leaves 7–25 mm long, plants distributed in central and southern Mexico........................................................................................7

7. Leaves with margin entire o crenulate around the leaf.......................................................................................................................8

- Leaves with margin crenate or dentate only in the upper half of the leaf ..........................................................................................9

8. Leaves and fruits hispidulous non-glandular....................................................................................................................... L. paneroi View in CoL

- Leaves glandular-pubescent and fruits glabrous ................................................................................................................. L. pringlei View in CoL

9. Bracts 4–10 mm long, calyx campanulate........................................................................................................................ L. parayana View in CoL

- Bracts 10–20 mm long, calyx tubular............................................................................................................................... L. zimapana View in CoL

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