Cyperaceae

Fruit usually an acheneachene:
a dry, indehiscent, one-seeded fruit, with seed attached to pericarp at a single point, derived from a single, superior, simple or compound, one-loculed ovary
, rarely a berry, utricleutricle:
a small, indehiscent, dry fruit with a thin wall (bladderlike) that is loose and free from the seed, derived from a single, superior, simple ovary
, or one-stoned drupedrupe:
(indehiscent drupe) a fleshy, indehiscent fruit with one more hard pits enclosing seeds, derived from single, superior, simple or compound ovary; (dehiscent drupe) a fruit with a dry or fibrous to fleshy or leathery outer husk that early to tardily breaks apart (or opens), exposing one or more nutlike pits enclosing the seeds
, 0.3–6 mm long, globoseglobose:
3D shape—more or less spherical
to trigonoustrigonous:
3D shape—having three faces that meet at distinct angles; triangular in outline
, tereteterete:
approximately circular in cross section; width and thickness approximately equal
, angledangular:
2D shape—having sides that meet at acute or obtuse angles  
, or compressedcompressed:
flattened; in grasses, used to denote compression (not necessarily flattened) either laterally or dorsiventrally
in transection, stylar remnants persistent, often beakedbeak:
a usually firm, terminal appendage, sometimes tapered
, with one seed, usually enclosed in persistent perianthperianth:
collective term for calyx and corolla of a flower
or membranousmembranous:
texture—extremely thin, pliable, and fairly tough
sac (perigyniumperigynium:
a sac-like structure surrounding the ovary
). Fruits may be winged. Pericarppericarp:
fruit wall or fruit coat
is black, brown, gray, green, white, yellow, or orange, shinyshiny:
uniformly reflecting a high proportion of incident light at all angles
or dulldull:
reflecting only a low proportion of incident light, with no apparent sheen
, crustaceouscrustaceous:
texture—thin, dry, indurate, and brittle
, indurateindurate:
texture—hardened or stony; yielding under strong pressure; not deformable without internal structural disruption
, or membranousmembranous:
texture—extremely thin, pliable, and fairly tough
, glabrousglabrous:
without hairs
or pubescentpubescent:
surface relief—bearing hairs
, smooth or variously ornamented.

Seeds ovoidovoid:
3D shape—ovate
, fusiformfusiform:
spindle-shaped; broadest at the middle and tapering at both ends
, or ellipsoidellipsoid:
3D shape—elliptic
, tereteterete:
approximately circular in cross section; width and thickness approximately equal
or compressedcompressed:
flattened; in grasses, used to denote compression (not necessarily flattened) either laterally or dorsiventrally
in transection, 0.3–6 mm long, rapheraphe:
a ridge or seam on the seed coat, formed by the portion of the funiculus united to the ovule wall in longitudinally curved ovules
and chalazachalaza:
the region at the base of the ovule where the integuments are inserted
usually conspicuous, punctatepunctate:
surface relief—dotted with pits or with translucent, sunken glands or with colored dots, similar to pitted
hilumhilum:
on seeds, the scar indicating where the funiculus was attached; on grass caryopses, the scar visible on the outer fruit surface revealing where the seed is attached on the inner fruit wall surface; or in Asteraceae cypselae, the scar visible on the outer fruit wall revealing where the fruit was attached to the receptacle
. Seed coat brown, thin, smooth. Seeds free of fruit wall.

Embryo small but well developed, capitatecapitate:
head-shaped; abruptly enlarged on one end to a relatively short, terminal portion
or broad, curvedcurved:
(of embryo) linear embryo is curved into an arch or horseshoe with the ends far apart
, transversetransverse:
lying, situated, or placed across
to seed length and basalbasal:
at or pertaining to the point of attachment; (of embryo) embryo occupies one end of the seed
, partially filling seed coat.

Endosperm copious, smooth, fleshy, and opaqueopaque:
not transmitting light
.