bres_, 134.

_Beaked_, ending in a prolonged narrow tip.

_Bearded_, see _barbate_. _Beard_ is sometimes used for awn, more
commonly for long or stiff hairs of any sort.

_Bell-shaped_, of the shape of a bell, as the corolla of Harebell, 90.

_Berry_, a fruit pulpy or juicy throughout, as a grape, 119.

_Bi-_ (or _Bis_), in compound words, twice; as

_Biarticulate_, twice-jointed, or two-jointed; separating into two
pieces.

_Biauriculate_, having two ears, as the leaf in fig. 126.

_Bicallose_, having two callosities or harder spots.

_Bicarinate_, two-keeled.

_Bicipital_ (_Biceps_), two-headed; dividing into two parts.

_Biconjugate_, twice paired, as when a petiole forks twice.

_Bidentate_, having two teeth (not twice or doubly dentate).

_Biennial_, of two years' continuance; springing from the seed one
season, flowering and dying the next, 38.

_Bifarious_, two-ranked; arranged in two rows.

_Bifid_, two-cleft to about the middle.

_Bifoliolate_, a compound leaf of two leaflets, 59.

_Bifurcate_, twice forked; or more commonly, forked into two branches.

_Bijugate_, bearing two pairs (of leaflets, &c.).

_Bilabiate_, two-lipped, as the corolla of Labiatae.

_Bilamellate_, of two plates (_lamellae_), as the stigma of Mimulus.

_Bilobed_, the same as two-lobed.

_Bilocellate_, when a cell is divided into two _locelli_.

_Bilocular_, two-celled; as most anthers, the pod of Foxglove, &c.

_Binary_, in twos.

_Binate_, in couples, two together. _Bipartite_, the Latin form of
two-parted.

_Binodal_, of two nodes.

_Binomial_, of two words, as the name of genus and species taken
together, 180.

_Bipalmate_, twice palmately divided.

_Biparous_, bearing two.

_Bipinnate_ (leaf), twice pinnate, 58. _Bipinnatifid_, twice pinnatifid,
57.

_Bipinnatisect_, twice pinnately divided.

_Biplicate_, twice folded together.

_Biserial_, or _Biseriate_, occupying two rows, one within the other.

_Biserrate_, doubly serrate, as when the teeth of a leaf are themselves
serrate.

_Bisexual_, having both stamens and pistil.

_Biternate_, twice ternate; i. e. principal divisions three, each
bearing three leaflets, 59.

_Bladdery_, thin and inflated.

_Blade_ of a leaf, its expanded portion, 49.

_Bloom_, the whitish powder on some fruits, leaves, &c.

_Boat-shaped_, concave within and keeled without, in shape like a small
boat.

_Border_ of corolla, &c., 89.

_Brachiate_, with opposi