PlantKey Open ecological atlas
Planner
Home / Browse / Callirhoe / Texas Poppymallow
iNaturalist — CC, credited & licensed per image
Malvaceae family

Texas Poppymallow Callirhoe scabriuscula

Native Specialist-bee host

Texas Poppymallow is an annual wildflower native to the lower 48 states. A host for pollen-specialist native bees.

More about this plant

Callirhoe scabriuscula is a rare species of flowering plant in the mallow family known as Texas poppy mallow. It is endemic to Texas, where it is known from about ten populations in the deep sands alongside the Colorado River. Much of its habitat has been lost, which is the reason it was federally listed as an endangered species in 1981. Wikipedia →

Growing & care

USDA PLANTS · TRY
Conditions
Sources · Conditions
Cold hardiness (derived) — Hardiness
Hardiness
≥ zone 10 derived from its U.S. range
Size & form
Sources · Size & form
USDA PLANTS — Lifespan
Lifespan
Annual
In the garden
Herb layer — Sits in the herb of a layered food forest or polyculture.Open guide →
derived roles
Species characteristics from USDA PLANTS (public domain) + TRY (CC BY) — general guidance, not a guarantee for your exact site. Deer "browsing" is documented palatability, not a deer-proof claim.

Wildlife & pollinators

How pollinator value is scored →
❧ Caterpillar hosts ~1 caterpillar species

Callirhoe supports ~1 caterpillar species.

Native butterfly & moth caterpillars are the base of the terrestrial food web — most songbirds rear their young almost entirely on them. As a host for native Lepidoptera this is a modest genus.

Keystone count (genus-level) from Warren II 2026 (CC0) · Tallamy host-use records.
✦ Bees specialist-bee host · 3 bee visitors

Specialist native bees depend on it.

Some native bees are pollen specialists (oligolectic) — they raise young only on pollen from particular plant genera. Callirhoe is a recorded specialist-bee host, so losing it can mean losing the bee that relies on it.

Xerces pollinator conservation →

3 native & managed bee species are documented visiting Texas Poppymallow :

Lithurgopsis littoralis · ✦ specialist Melissodes intortus · long-horned bee · ✦ specialist Melissodes tepaneca · Tepanec Long-Horned Bee
Specialist hosts from Smith et al. 2024. Visitor records (observations, not exhaustive) from Noori et al. 2026 (CC BY 4.0) · GloBI → · ✦ = pollen-specialist bee (Smith et al. 2024)
Species thumbnails re-hosted from iNaturalist — Creative Commons, credited per image (hover for credit). Click any species to see it on iNaturalist. Not exhaustive; many taxa have no openly-licensed photo yet.
Sources for this entry (16) Open & cited
[01] Scientific name & family — USDA PLANTS (DwCA, Zenodo 17903503)
[02] Growth habit & duration — USDA PLANTS (DwCA, Zenodo 17903503)
[03] Native status & distribution — USDA PLANTS (DwCA, Zenodo 17903503)
[04] Common name — USDA PLANTS (via GBIF)
[05] Invasive / introduced status — USDA PLANTS (DwCA, Zenodo 17903503) — native status
[07] Description — Wikipedia (CC BY-SA)
[08] Ecological value — Warren II 2026 (CC0) · Tallamy host-use counts · Smith et al. 2024 (CC BY)
[09] Conservation rank — NatureServe Explorer (CC BY)
[10] Federal ESA status — USFWS ECOS (U.S. Fish & Wildlife Service)
[11] Cold hardiness (derived) — Derived from U.S. range × USDA PHZM zones
[13] Bee specialists — Smith et al. 2024 (Zenodo, CC BY 4.0)
[14] Flower-visitor value (derived) — Noori et al. 2026 (CC BY 4.0) · GloBI
[15] Caterpillar host count — Warren II 2026 (Dryad, CC0) · Tallamy host-use counts
[16] County range — GBIF Open Data — open-licensed occurrences (CC0/CC-BY) → county
Spot an error or have a better photo? Every field links to its source, and the whole dataset is open.
Cite this page Open data, please attribute

PlantKey’s data is open under CC BY-SA 4.0 — free to reuse and adapt, with attribution and the same licence. Photos keep their own per-image licence + credit (see Sources above).

Citation

Loading…

BibTeX 
Loading…