Contains 14 accepted taxa overall.
Characteristics
Within the genus Ipomoea (and related genera: Argyreia, Stictocardia, Turbina), some species are known to be infected by an ascomycete related to Periglandula. The endophytic fungus produces ergot alkaloids which likely protect the seed, seedling, and mature plant from herbivory. It appears the fungal alkaloids can be transported by the plants to certain tissues (Beaulieu et al. 2013).
Classification
Citation
IPOMOEA Linnaeus, Sp. Pl. 159. 1753.
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TYPE: Ipomoea pes-tigridis Linnaeus, typ. cons.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Ipomoea batatas | Sweet Potato | |||
| Ipomoea batatilla | Bush Morning-glory | |||
| Ipomoea coccinea | Scarlet Creeper, Red Morning-glory | |||
| Ipomoea cordatotriloba var. cordatotriloba | Coastal Morning-glory, Tie-vine | |||
| Ipomoea hederacea | Ivyleaf Morning-glory | |||
| Ipomoea imperati | Beach Morning-glory | |||
| Ipomoea lacunosa | White Morning-glory, Whitestar | |||
| Ipomoea leucantha | Whitestar morning glory | |||
| Ipomoea macrorhiza | Indian-midden Morning-glory, Manroot | |||
| Ipomoea muricata | Lilacbell, Purple Moonflower | |||
| Ipomoea pandurata | Wild Sweet Potato, Manroot, Man-of-the-earth | |||
| Ipomoea purpurea | Common Morning-glory | |||
| Ipomoea quamoclit | Cypress-vine | |||
| Ipomoea sagittata | Saltmarsh Morning-glory |
Identification Key
1. Stems densely white-tomentose and leaf blades pinnately veined; fruit indehiscent
1. Stems glabrous to pubescent, or if densely tomentose then leaf blades palmate-pinnately veined; fruit dehiscent or circumscissile
2
2. Leaves pinnately divided into linear segments
2. Leaves entire or with broad lobes, or palmately dissected
3
3. Leaves palmately dissected, appearing palmately compound
4
3. Leaves entire or with broad lobes, the sinuses not reaching the petiole (nearly reaching the petiole sometimes in I. batatas or I. imperati)
5
4. Leaves of axillary buds developed and stipulelike
4. Leaves of axillary buds not developed
5. Leaf blade distally oblong to broadly rounded, the apex truncate, emarginate, to broadly obtuse
6
5. Leaf blade distally broadly to narrowly deltoid and gradually narrowed to an acute, acuminate, or mucronulate tip
8
6. Leaves chartaceous
6. Leaves somewhat fleshy, semi-succulent
7
7. Leaf blade not lobed, with conspicuous reticulate venation between the secondary veins; corolla pinkish to lavender throughout, darker in the throat
7. Leaf blade sometimes lobed, with inconspicuous or faint reticulate venation between the secondary veins; corolla white with yellow to purple throat
8. Plant an erect shrub, the flowering portions of the stem mostly > 4 mm in width; leaves lanceolate
8. Plant herbaceous, repent, clambering, or twining, the flowering portions of the stem mostly < 4 mm wide, if thicker, then leaves not lanceolate
9
9. Leaf blade tomentose abaxially
9. Leaf blade glabrous to pilose abaxially
10
10. Plant with filiform prickles
10. Plant without prickles or prickles not filiform
11
11. Calyx lobe body obtuse with a subapical filiform prolonged tip; corolla red, rarely white
11. Calyx lobe tip terminal, not subapical; corolla white, light blue, or purple
12
12. Calyx lobe tip linear to filiform, typically subequal to the body in length
13
12. Calyx lobe tip obtuse, acute, to acuminate, less than half the length of the body
14
13. Plant glabrate; corolla white
13. Plant densely pilose; corolla light blue, the throat white to pale yellow
14. Leaf blade lanceolate, the base broadly to shallowly acute or rounded-truncate to truncate-acute; corolla red (rarely white)
14. Leaf blade not lanceolate, the base cordate to sagittate, or truncate; corolla white to purple
15
15. Plant repent or stems floating
16
15. Plant twining, stems sinuous
18
16. Sepals with bristle-like tips
16. Sepals without bristle-like tips
17
17. Leaf blade apex deltoid, with an acute to acuminate tip
17. Leaf blade apex rounded, acute to obtuse with a mucro
18. Midvein region green or darker, strongly contrasting with margin of sepal
19
18. Midvein region not pronouncedly darker or scarcely darker than margin of sepal
20
19. Stem without prickles; sepal tip obtuse to acute; fruit circumscissile at base, with 1-2 seeds
19. Stem sometimes with deltate prickles; sepal tip caudate-acuminate; fruit not circumscissile, with 1-4 seeds
20. Sepal tips rounded, obtuse, sometimes mucronate
21
20. Sepal tips acute to acuminate
23
21. Leaf blades sagittate; corolla purple to lavender
21. Leaf blades cordate; corolla white or white with a purple throat
22
22. Corolla with a purple throat; sepals 12-15 mm long
22. Corolla without a purple throat; sepals 15-25 mm long
23. Plant usually with some leaves sagittate
23. Plant mostly without sagittate leaves
24
24. Pedicel without papillae or subtly papillate; corolla (3.5)4-8 cm long
25
24. Pedicel often subtly papillate; corolla 0.5-5 cm long
27
25. Stems sometimes fleshy (i.e. sweet potato), sometimes rooting; sepals with bristle-like tips
25. Stems not fleshy, not rooting; sepals merely acute to acuminate at the tip
26
26. Pedicel shorter than the calyx
26. Pedicel subequal to longer than the calyx
27. Corolla 0.5-2.5 cm long; sepals glabrous; pedicel usually to 6 mm long (rarely to 11 mm)
27. Corolla 1.5-5 cm long; sepals ciliate-margined; pedicels 5-14 mm long
28
28. Longest sepals 5-8 mm long, oblong to narrowly elliptic-oblong; corolla 1.8-2 cm long; largest dimension (length or width) of fruit 5-6 mm
28. Longest sepals 8-14 mm long, glabrous or ciliate-margined; corolla 0.5-4 cm long; largest dimension (length or width) of fruit 7-13 mm long
29
29. Corolla pinkish to lavender (rarely white), 2.5-5 cm long; sepals ovate-lanceolate to lanceolate-acuminate, 8-14 mm long; largest dimension (length or width) of fruit 7--10 mm; pedicels 6 mm or more long
29. Corolla white to pale pink, 1.5-3 cm long; sepals lanceolate, 10-15 mm long; corolla; largest dimension (length or width)of fruit 10-13 mm; pedicel to 7 mm long
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||