Corsiaceae

seed

Fruit a loculicidalloculicidal:
type of capsular dehiscence, opening longitudinally through the locules (compare septicidal)
capsulecapsule:
a dry, dehiscent fruit derived from a compound ovary
dehiscing to the base (Corsia) or at terminal aperture (Arachnitis), 20–35 mm long, linearlinear:
(shape) long, narrow, and uniform in width; (of embryo) embryo is straight and much longer than wide
to oblongoblong:
2D shape—much longer than broad with nearly parallel sides, corners are rounded
, tereteterete:
approximately circular in cross section; width and thickness approximately equal
or triangulartriangular:
2D shape—three relatively straight sides with distinct corners; more angular than teardrop-shaped
in transection, with many seeds. Pericarppericarp:
fruit wall or fruit coat
purple, brown, dulldull:
reflecting only a low proportion of incident light, with no apparent sheen
, glabrousglabrous:
without hairs
.

Seeds fusiformfusiform:
spindle-shaped; broadest at the middle and tapering at both ends
, tereteterete:
approximately circular in cross section; width and thickness approximately equal
in transection, 0.6–3 mm long (minute in Arachnitis), with seed coat elongated into apicalapical:
at or pertaining to the end of the seed or fruit distal from its point of attachment (i.e., base)
and basalbasal:
at or pertaining to the point of attachment; (of embryo) embryo occupies one end of the seed
wings. Funiculus long, exceeding margins of fruit, or short, not persistent in the fruit. Seed coat reddish brown to black, obscurely longitudinally groovedgrooved:
surface relief—linear depressions that may be single or form a series of grooves over the surface
or reticulatereticulate:
surface relief—netted, raised walls or concave grooves forming a net-like surface pattern with flat, concave, or convex interspaces
with 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
.

Embryo minute, undifferentiated from food reserves, acotyledonous.

Endosperm present.