when applied to fungi, attached to the tips of threads.

ACROSPIRE (akros, Gr. summit; speira, a cord), the

first sprouting leaves of corn.

ACROSPORE (akros, Gr. summit), a spore borne on the summit of a thread.

ACTINENCHYMA (aktin, Gr. a ray; cheuma, tissue), the cellular tissue of medullary rays, stellate cellular tissue (8).

ACULEATE (aculeus, Lat. a prickle), armed with prickles.

ACUMINATE (acumen, Lat. a point), tapering to a point (127).

ACUMINULATE (diminutive), shortly taper-pointed. ACUTE (acutus, Lat. sharp), sharp-pointed.

ADESMY (a, Gr. without; desmos, a bond), the splitting of an organ which is usually entire.

ADHERENT (ad, Lat. to; hæreo, I stick), sticking to, or grown to, another body.

ADHESION (ad, Lat. to; hæreo, I stick), the union of parts usually distinct (294)..

ADNATE (adnascor, Lat. I grow to), grown to another portion by the whole surface, attached to the stem. (186 c).

ADNEXED (ad, Lat. to; necto, I join), just reaching the stem; applied to the gills of Agarics (275). ADPRESSED (ad, Lat. to; pressus, pressed), in close contact, but not adherent.

ADVENTITIOUS (ad, Lat. to; venio, I come), developed in an unusual position.

ADVERSE (ad, Lat. towards; verto, I turn), opposite. EQUILATERAL (æquus, Lat. equal; lateralis, belonging to a side), equal-sided (82).

AEROPHYTES (aer, Gr. air; phuton, plant), plants growing entirely in the air.

ERUGINOSE (@ruginosus, Lat. cankered), verdigrisgreen.

ESTIVATION (@stivum, Lat. summer), the manner of folding in flower-buds.

AGGLOMERATE (agglomero, Lat. I crowd together), heaped up, or crowded together (229).

AGGLUTINATE (agglutino, Lat. I glue), glued together. AGGREGATE (aggrego, Lat. I assemble), collected together (237). (See AGGLOMERATE.)

ALA (Lat. a wing), a lateral petal of a papilionaceous flower (181 a).

ALABASTRUS (Lat. rose-bud), applied to a flower-bud. ALATE-PINNATE (ala, Lat. a wing), pinnate leaf with a winged petiole.

ALBESCENT (albesco, Lat. I grow white), growing white.

ALBICANT (albico, Lat. I grow white), growing whitish.

ALBINISM (albinus, Lat. white), a pale condition due to the non-development of chlorophyll. (See ETIOLATION.)

ALBUMEN (Lat. the white of an egg), a substance found in many seeds, surrounding the embryo. ALBUMINOUS (albumen, Lat. white of an egg), furnished with albumen.

ALBURNUM (Lat. sapwood), white, or sap, wood of a

tree.

ALECTORIOID (from the genus Alectoria), filiform, like the thallus of Alectoria (lichens).

ALGOLOGY (alga, Lat. a sea-weed), that branch of botany which treats of alge, or sea-weeds. ALLIACEOUS (allium, Lat. garlic), pertaining to the allium, or garlic family; smelling like garlic. ALTERNATE (alternus, Lat. one after another), two organs so placed as not to be opposite each other (106).

ALTERNATELY-PINNATE, when the leaflets of a pinnate leaf are alternately inserted on the petiole (106). ALTERNATIVE (alternus, Lat. one after another), in æstivation, where the inner whorl alternates with the outer (159).

ALVEOLATE (alveolus, Lat. a hollow vessel), socketed or honeycombed.

AMENTUM (Lat. a thong), a deciduous spike or catkin. AMNIOS (amnios, Gr. a fœtal membrane), fluid of the rudimentary embryo-sac.

AMORPHOUS (a, Gr. without; morphe, form), without definite form.

AMPHICARPOUS (ampho, Gr. both; karpos, fruit), possessing two kinds of fruit.

AMPHIGASTRIA (amphi, Gr. about; gaster, the belly), scale-like stipules of mosses.

AMPHIGENOUS (amphi, Gr. about; gennao, I produce), applied to fungi when the hymenium is not restricted to a particular surface.

AMPHISARCA (ampho, Gr. both; sarx, flesh), a compound, many-celled, superior fruit, with a woody or indurated shell inclosing an internal pulp. AMPHITROPAL (amphi, Gr. about; trepo, I turn), applied to an embryo curved so that both ends are brought together.

AMPLEXICAUL (amplector, Lat. I embrace; caulis, a stem), embracing the stem (120).

AMPLEXUS (Lat. a surrounding), in vernation, used synonymously with Equitant (61).

AMPULLACEOUS (ampulla, Lat. a vessel), resembling a bladder or flask.

AMYLACEOUS (amulon, Gr. flour), starch-like.

ANALOGY (ana, Gr. according to; logos, definition), resemblance of form, but not of function.

ANANTHERUM (ana, Gr. without; anēr, a man), filaments without anthers.

ANASTOMOSE (anastomosis, Gr.), passing of one vein into another, by means of branches (17).

ANATROPAL (ana, Gr. over; trepo, I turn), an ovule turned down with the foramen to the hilum (207). ANBERRY, a warty condition in the roots of Crucifers, caused by the attacks of insects.

ANCIPITAL (anceps, Lat. two-edged), two-edged and flattened (41).

ANDRECEUM (anēr, Gr. a man), the male organs of a flower.

ANDROGYNISM (aner, Gr. a man; gunē, a woman),

a change from a dioecious to a monoecious condition.

ANDROGYNOUS (anēr, a man; gunē, a woman), having an inflorescence of male and female flowers. ANDROPHORUM (anēr, Gr. a man ; phero, I bear), tube formed by united filaments around the pistil. ANFRACTUOSE (anfractus, Lat. a turning), presenting sinuosities (192).

ANGIENCHYMA (aggos, Gr. a vessel; cheuma, tissue), a term applied to vascular tissue (12).

ANGIOCARPOUS (aggeion, Gr. a vessel; karpos, fruit), having the fruit covered by an envelope or cupule (273).

ANGIOSPERMOUS (sperma, Gr. a seed), with the seeds inclosed in an ovary.

ANGULAR (angulus, Lat. an angle), with projecting angles.

ANISOMEROUS (anisos, Gr. unequal; meros, a part), the same as unsymmetrical.

ANISOSTAMENOUS (stēmon, Gr. a stamen), when the stamens are not of the same number as the petals. ANNOTINOUS (annotinus, Lat. that which is one year old), the last year's shoot rendered visible by an interruption at the point of junction with the previous growth.

ANNUAL (annuus, Lat. yearly), lasting but one year. ANNULAR (annulus, Lat. a ring), having the form of a ring (9 b).

ANNULATE (annulus, Lat. a ring), ringed, or with the appearance of rings (31).

ANNULUS (Lat. a ring), the ring round the theca of