Description:

Cenchrus agrimonioides var. agrimonioides is a perennial grass with 0.3 to 2 m tall stems. The leaves are alternate and simple, with flat or folded blades, measuring 20–40 cm long and 5–25 mm wide, characterized by scabrous upper surfaces and glabrous lower surfaces, with a prominent midrib. The leaf sheaths are compressed, keeled, significantly longer than the internodes, and glabrous, ending in a membranous, fimbriate ligule 1–1.2 mm long. It bears flowers within racemes 5–10 cm long, with a densely puberulent axis. The burs are cylindrical to lanceoloid, fusiform, 8–18 mm long, with a bur receptacle narrow at the base, expanding above, and densely pubescent. The outer series of bristles are numerous, somewhat spreading, and retrorsely scabrous. The spikelets are singular per bur, with scaberulous and awn-tipped glumes; the fertile lemma and palea are indistinctly 5-nerved and acutely apexed. The fruit is an ovoid caryopsis, approximately 2.6 mm long and 1 mm in diameter. It is found on sand and dry, rocky slopes and ridges in partial shade between 0 – 760 meters.

Cenchrus agrimonioides var. agrimonioides

Family: Poaceae

Hawaiian Name: kāmanomano

 Texture: TBD

Geographic Distribution:

 Lanai, Maui, Oahu

PEPP Status:

Not Applicable

Native Status:

Endemic

2D Seed Shapes

Bean-shaped (Reniform): Resembling the shape of a kidney or bean.

Square or Oblong: Angular shape with all sides more or less equal or longer than wide.

Triangular: Three-sided shape, broadest below the middle.

Elliptic: Rounded at both ends. shaped like an ellipse or oval.

Ovate or Obovate: egg-shaped, broader at one end.

Linear: Extremely long and narrow, with sides usually parallel.

Round: Appears circular, with length and width roughly the same.

Cardioid (Heart-Shaped): One edge has a prominent double curve into two lobes.

3D Seed Shapes

Cylindrical: A cylinder with parallel sides and a circular cross-section.

Discoid: Resembling a disc or plate with two relatively flat surfaces.

Fusiform: Spindle-shaped, tapering at both ends.

Globose: Spherical.

Lenticular: Resembling a lens with two convex surfaces.

Ovoid: Egg-shaped.

Plano-convex: Having a flat ventral (planar) surface and a curved dorsal (convex) surface.

Polygonal: Having more than three flat faces meeting at angles.

Sectoroid: Resembling a segment of an orange with two relatively flat faces and one curved face.

Subglobose/ellipsoid: Inflated shape but less than spherical.

Trigonous: Having three faces that meet at a distinct angle; triangular in cross-section.

Federal Status

Endangered species (E) are species that are so rare they’re in danger of becoming extinct.

Threatened species (T) are species that are likely to become endangered within the foreseeable future throughout all or a significant portion of their range.

Species of Concern (SOC) are species about which there are some concerns regarding status and threats, but insufficient information is available to list the species under the Endangered Species Act (ESA).

Plant Extinction Prevention (PEP) is a state status for rare plants that focuses its efforts on species that have fewer than 50 remaining wild individuals.

Storage Behavior

Orthodox seeds (desiccation-tolerant): can be dried to an internal seed moisture of less than 12% water and stored at freezing temperatures.

Intermediate seeds (temperature-sensitive) tend to age faster than orthodox seeds and may have only a 5-year lifespan when stored at -20°C. They are recommended for storage at 5°C.

Recalcitrant seeds (desiccation-sensitive): cannot be stored in a conventional freezer as they cannot survive after drying and/or freezing at -20°C. They are recommended for cryopreservation storage.