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Daucus pusillus

Michx. (1803)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Asterids Order: Apiales Family: Apiaceae Genus: Daucus

American carrot

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Description

Key Characters:

Growth Form: Annual herb 3–90 cm tall.

Stems: Caulescent, usually solitary, unbranched or few–branched above, retrorsely papillate–hispid.

Roots: Taprooted.

Leaves: Leaves simple (highly dissected) or compound. Alternate. Blades oblong in general outline, 3–10.5 cm long excluding the petioles, 1.5–7 cm wide, the ultimate divisions linear, 1–5 mm long, 0.5–1 mm wide. Apex acute. Surfaces ± hispid. Margins highly dissected. Petioles sheathing; 4–15 cm long. Stipules absent.

Flowers: Flowers in peduncles 1.1–4.5 dm long, retrorsely papillate–hispid. , involucel of linear, acute bractlets, about equalling the pedicels. involucre of foliaceous, pinnately decompound bracts, the divisions short, linear or lanceolate. Flowers bisexual (perfect); Pedicels unequal 2–9 mm long. Calyx teeth 0.1–0.2 mm long. Corolla of 5 petals; petals white. Few to numerous, unequal, 0.4–4 cm long, compact in fruit. Stamens 5, inserted on an epigynous disk. Ovary inferior, 2-celled; ovules 1 per cells, anatropous; styles 2, usually swollen at base into a stylopodium. Styles short, the stylopodium conical; carpophore entire or bifid.

Fruit: Fruit oblong; 3–5 mm long; ca. 2 mm wide; usually broadest below the middle; the commissural surface with 2 rows of hispidulous hairs; primary ribs filiform and bristly; the secondary ribs winged with each wing divided into a single row of barbed or glochidiate prickles; vittae solitary under the secondary ribs; 2 on the commissure; mericarps readily separating. Seeds 1 per mericarp; embryo small; endosperm cartilaginous. seed face shallowly concave to plane.

Ploidy: 2n = 22

Habitat: Found in dry habitats suce as cinder slopes on O‘ahu; Moloka‘i; Lāna‘i; and Hawai‘i.

Elevation Range:

Historical Distribution

Images

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Uses and Culture

USES

Natural History

Statewide Status

Indigenous

Island Status

Kaua'i Indigenous
O'ahu Indigenous
Molokai Indigenous
Lana'i Indigenous
Maui Indigenous
Hawai'i Indigenous

Dispersal Agents


Pollinators

Notes

  • Description digitized by Pumehana Imada
  • Native to North and South America; in Hawai‘i introduced or perhaps native. According to Hillebrand (1888), a native or pre-contact introduction, since in his day it grew chiefly in uninhabited mountainous regions. Further support for this idea is given b

Bibliography

Name Published In: Fl. Bor.-Amer. 1: 164 (1803)

Other References

Wagner et al. 1990:204 (O, Mo, L, H); Lorence et al. 1995:22 (K); Munro 27 BISH (L†, 1927); Note: status changed from nat to ind on basis of seeds found at adze quarry on Mauna Kea, see Wagner et al. 1990:204

Wagner, W. L., Herbst, D. R., & Sohmer, S. H. (1999). Manual of the Flowering Plants of Hawai'i, Vols. 1 and 2 (No. Edn 2). University of Hawai'i and Bishop Museum Press.

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Daucus pusillus N Kona Distreict. Keauhou 2 AHU. Tr 58(38); NW slope of Mauna Loa; S-SE of Puu Lehua Growing on pahoehoe; dry mamane-mixed native trees community w/an exotic grass-native shrub understory. Preserved_Specimen Warshauer, F.R. 2033 Hawaii BISH 1978-08-01
2 Daucus pusillus Paomai Preserved_Specimen Munro, G.C. 339 Lanai BISH 1914-04-18
3 Daucus pusillus Near Hawi Along roadside; locally common. Preserved_Specimen (Not on sheet) Hawaii BISH 1926-08-12
4 Daucus pusillus Kukaiau, Hamakua Very rare; on cinder slope. Preserved_Specimen Hosaka, E.Y. 1540 Hawaii BISH 1936-08-27
5 Daucus pusillus [Hawaiian Islands; U.S.A.; O`ahu; Hawai`i; Honolulu] Preserved_Specimen Rémy, J. 491 Oahu BISH 1854-01-01
6 Daucus pusillus Kawela, by Forest Reserve boundary Preserved_Specimen Hobdy, R.W. 539 Molokai BISH 1979-05-14
7 Daucus pusillus East Maui, Haleakala National Park by Entrance Station. Preserved_Specimen Moore, L. Maui BISH 2012-11-06
8 Daucus pusillus Poholua Preserved_Specimen Forbes, C.N. 90 Molokai BISH 1912-06-01
9 Daucus pusillus [Hawaiian Islands; U.S.A.; O`ahu; Hawai`i; Honolulu] Preserved_Specimen Rémy, J. 491 Oahu BISH 1851-01-01
10 Daucus pusillus Paomai Preserved_Specimen Munro, G.C. 311 Lanai BISH 1914-04-18
11 Daucus pusillus East Maui, Haleakala National Park, HQ employee parking lot. By stone building on burm by pipe Preserved_Specimen Starr, F. Maui BISH 2014-11-04
12 Daucus pusillus Puu Kapele Preserved_Specimen Fagerlund, G.O. 512 Hawaii BISH 1943-04-13
13 Daucus pusillus Puuwaawaa Preserved_Specimen Forbes, C.N. 42 Hawaii BISH 1911-06-08
14 Daucus pusillus Heights above Kamalo Preserved_Specimen Rock, J.F.C. 7026 Molokai BISH 1910-04-01
15 Daucus pusillus East Kawela, along the road to Puu Kolekole cabin, on the east side of East Kawela Gulch, across from the USGS monitoring station. Preserved_Specimen Oppenheimer, H.L. 40913 Molokai BISH 2009-04-02
16 Daucus pusillus Koko Head Preserved_Specimen Mann, H. 600 Oahu BISH 1864-01-01
17 Daucus pusillus Kanepuu Preserved_Specimen Munro, G.C. 27 Lanai BISH 1927-05-28
18 Daucus pusillus no locality information given Preserved_Specimen Munro, G.C. BISH 1916-01-01
19 Daucus pusillus Below Canyon Rd. Relic Dodonaea shrubland. W/Bidens sandwicensis, Melanthera connata, Sida fallax, Sicyos herbstii, Schiedea spergulina, Spermolepis hawaiiensis, Heteropogon contortus, Panicum konaense, Doryopteris decora Preserved_Specimen Wood, K.R. 14613 Kauai BISH 2011-04-20
20 Daucus pusillus Below Puu Kapu Dry ridge. Preserved_Specimen Christophersen, E. 1552 Oahu BISH 1931-02-12
21 Daucus pusillus West of Kamalo Canyon Common in gulches in poor soil in goat damaged Ohia-Pukiawe grassland. Growing vigorously in patches of disturbed soil much like a weed. Preserved_Specimen Hobdy, R.W. 3035 Molokai BISH 1989-03-30
22 Daucus pusillus Waimea District; Na Pali-Kona Forest Reserve; ridgetop at jct of Koaie and Hipalau Valleys Common herb on heavily grazed, open ridge; with Plantago, Cerastium, Bromus, Vulpia, and Silene; diverse remnant forest of Metrosideros, Hibiscus waimeae, Diospyros, Santalum, Canthium, and Canavalia with Melia and Lantana. Preserved_Specimen Flynn, T.W. 4574 Kauai BISH 1991-04-25
23 Daucus pusillus N Kona Distreict. Keauhou 2 AHU. Tr 56(30/31); betwn Mauna Loa & Hualalai; N of Puu Keanui & Puu Pohakuloa Occasional; dry koa-mamano community w/an exotic grass and scattered native shrub understory. Preserved_Specimen Jacobi, J.D. 1193 Hawaii BISH 1978-08-01
24 Daucus pusillus Makolelau AHU. Tr 7(22/23); along ridge S of Puu Kolekole Dry exotic grassland w/native and exotic shrubs and scattered native trees. Preserved_Specimen Stemmermann, R.L. 3880 Molokai BISH 1979-06-20
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