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Race'me, Ka'cemus, RACEMoaE — A form 
of inflorescence in which the flowers 
are borne on pedicels along a single 
undivided axis or rhachis. Race- 
mtfor'mis— Shaped like a raceme. 
Rackmclo'sus — The diminutive of 
“ Racemo'sus/’.the inflorescence in very 
small racemes. 
Ra'chis or Rha'chis — That portion of an 
inflorescence, leaf, or frond upon which 
the ramifications are attached — that is, 
the continuation of the petiole or 
peduncle ; also of the stripes in ferns, 
Rha'chilla is the axis of the spikelet 
of a grass. 
Rachi'tis — A disease producing the 
abortion of fruit. 
Rachodes — Appl'ed to plants whose stems 
have the cuticle broken into thin 
scales. 
Ra'dial, Radia'lis — B elonging to the ray, 
in Compositfe, &c. 
Ra'diant, Ra'diate, Kadia'tkd, Radiat'- 
ING, {Ra'dians, RAnrA'TCS — Arranged 
like rays or the extreme portion of 
rays, sprearling from a common centre. 
Rad'ical, Radioa'lis — Proceeding from a 
point close to the snmniifc or crown of 
the root. Radica'tion — The general 
disposition and arrangement of the 
roots. 
Radicel'la and Radi'cula— T he diminu- 
tive for “ Radix, root. 
Rab'icle, Radi'cula — The rudimentary 
state of the root in the embryo. Some- 
times applied to small roots, or to the 
fibres about the tap-root, 
RA'urus-MEDUL'LARis— A pith or medullary 
ray. 
Ra'mal, Ramea'lis — Either originating 
frojn a branch, or merely growing on a 
branch. 
RAMEA'Kiua — Usriallv restricted to aerial 
roots, which originate from branches. 
Ramen'tum — A shaving ; a thin mem- 
branous scale-like lamina of cellular 
tissue, on the surface of plants. Ramen- 
ta'ceous, Ramenta'ceus — Bearing 
ramenta, as found on the stripes of 
many Ferns. 
Ra'iikous, RA'MKua— Synonym for “Ra- 
mal.” 
Ramiflo'rus— W here the flower or inflores- 
cence occurs on the branches. 
RAMTFOB'iiis — Resembling a branch in 
form. 
Ramo'sus — Full of branches. 
Ra'mus — A brunch ; any subdivision of the 
stem, originating in the development 
of a caulinar leaf-bud. Ra'mulus— A 
little branch; also Kamun'culus, the 
ultimate subdivision iu branching. 
Ramus'culvm is synonymous. Ramus'- 
CULI is applied to the mycelium of some 
Fungi. 
Rapa'ceus — L ike the Radish root. Syno- 
nym for “ Fusiformis.*’ 
Raphe', RAPnA(A seam)— A fibro- vascular 
chord running from the placenta to the 
nucleus, through the chalaza. 
Eaphi'de, Ra'phida, Ra'phis (A needle) 
— A minute freriueutly acicular crystal 
of some insoluble salt formed in the 
interior of jilant^. These aitj abundant 
in the fruit of Monatcru ddidomij also 
in the stalk of Rhubarb (gi\ iug sign of 
their presence by grittiness of the 
tissue when cut through). 
Ra'RUS — T hinly set ; where particular 
organs are not crowded, or fewer in 
number than is usual in allied species. 
Rattan — A commercial name for thestems 
of Vahtmuit or Lawyer-canes. 
Rattoon or R.\toon — One of the stems or 
shoots of sugar-cane of the second 
year’s growth from the root, or later. 
Rat — T he outer florets in a capitulum in 
Coinposir«e. The oiitt-r flowers when 
differently formed from tin- inner, in 
I uinbeK. 
Reokp'tacle, Refkpt.Vculum— In a capi- 
tate inflorescence the recejjtacle is the 
shiurt, flat convex or conical axis on 
which the flowers are seated. It is 
also used for the toruvs of a single 
flower, and then is the extremity of 
the peduncle (above the calyx) upon 
w’hicfi the corolla, stamens, and ovary 
are inserted. It is sometimes little 
more than a mere point or minute hemis- 
l)here, but it Is often also more or less 
elongated, thickened, <»r otherwise 
enlarged. (See “Disk,” or “Disc.”) 
In ferns, that part of the vein on which 
the sorus is seated. The terms, how- 
ever, are of varying signification, most 
usually implying a hoilowed-out l>ody 
containing other bodies;. The same as 
stroma ; stalk of a discocarp, &c., in 
lichens ; cu]j of the thallua containing 
Boredia. 
Re'cess, Keces'sus— S ynonym for “Sinus.” 
Recli'nate Rkcli'ninc, Rj'X’lina'tus— So 
far bent from a perpendicular direction 
that the up|>er end becomes directed 
towards tho ground. Also implies that 
one part is pressed down upon another. 
RECONDl'Trs — jflidden. 
Rectiflo'rus— W here the axis of the 
florets, in some Coinimsitse, are parallel 
I to the main axis of the inflorescence. 
I Rectineryts— S traight-iieived ; ayno- 
I nyin for “ Parallelinervis.” 
I Recur'vki), Recurva'tus, Rkccr'vus— 
I Synonym for “ Curv-ed” ; but especially 
w'hen the bending is in a backward 
directiiui. 
Recuti'tus— H aving the appearance of 
being divested of epidermis. 
Redu'plic.atk, Redu'plicativb, Eedupri- 
ca'tus, REnrPLiCATi'ous — Valvate ; 
wirh the edges reflexed. 
Reflex', Reflex'kd, Rkflkx’cs— Turned 
back ; where the apex is so far l>ent 
back as to approach the base. (See 
the hairs upem the stems of the common 
Morning Cilory, Jpoma'a purpurea.) 
Rfj’Kac'ti s — Broken ; w here a part is so 
suddenly reflex as to api>ear broken at 
the point \v’here curvature takes place. 
(See the spikclets of the common grass, 
Aiidropogon refractus.) 
