DEN 
vate fmooth, flefhy. Clufters from the bafe of the leaves. 
° 
Lip revolute. Grows on rocks along the fea-fhore at Port- 
Jackfon, New South Stems branched, creepin 
with very long, thick, fibrous roots. Leaves alternate, 
ATES 
fcarcely an inch long, fcflile, obovate or elliptical, {moot 
Saal ay ae oe convex neath, furr 
above. — Svip foli eathing, membranous, very 
large. Chafers ee “from ¢ {tipula at t 
the leaf, ercét, about a fin nger 
ble fheath of their own in the ie er part, flender above, of 
fix or more very elegant flowers. The petals and calyx- 
deaves are upright, linear, acute, cream-coloure Pa 
rt. Lip narrow, acute, revolute, flightly three- 
lobed, Blue near the bafe, haa and furrowed towards 
the extremity. 27. D. pyg tem creeeping, bul- 
biferous. Leaves nearly i. "file, pa dawny, cori- 
aceous, folitary from each bulb. Clu baat .... Gathered 
3 and trees in Neg Zealan y Mr. Archi- 
his is but half a i of the laft, 
caves na nh y 
footfalks, elliptical, obtute, revolute eee ces rather than 
ficthy ; ribbed and r neath; cl above with 
Pa footitall proceeds 
bu'b, like a ring, {mooth and fhining, 
much wrinkled in a dry ftace, but awa 
very (eels when fre 28. D. reptans. a _ ee a 
crecping, bulbiferous. Dees ovate, ac 
ulb. Flower-{talks radical.’” Sw. Fo re in ne ifland of 
Mauritius. Of this we know nothing but the above cha- 
racter of Dr. Swartz, who quotes in Schrader’s Journal, 
»(w oie he originally made it a Cymbidium, ) the een 
tec cae -maravara, eede see Mal. v. 12 but 
with am t. lant anes  figared i is _slofely 
allied to our laft fpecies, See its lea e lar mo 
emarginate, and their bulbs rather “elliptical dae ann ni 
ach bulb bears but one leaf, which circumftance d t 
ne “ Dr. Swartz’s fpecific tlic ary 29. 
“¢ Stem creeping anches fheathed, fingle- m 
"Leaves broad-lanceolate, obtafe, Cluiters ‘folitary, 
r 
r. Swartz’s work above quoted. 3 > SP Ste 
creeping, thread-thaped, ieee Leaves s oblong, foli- 
tary from each bulb. wer-ftalks from the bafe of the 
bulbs, very — conyate ; 2g-zag at their fummits.” 
Sw. 31. Der “© Stem leaflets, upright, cake d with 
ovsto: Pace pen wee theaths. Clutter terminal. 
Flowers conical, oe deltoid ; t { 
crenate.” Sw. 32, D. paniculatum. “Stem clothed 
its alee part wih oblong, obtufe, emarginate leaves ; 
in its upper two-edged and fheathed. Spikelets thread- 
taped Sale terminal. Flowers crowded, minute.”’ 
. Swartz conjeGtures the Epidendrum Paes Linn. 
ne luzonica ; Petiv. Gazoph. . f. 10.) may be of 
this genus, which, as far as can be guefle d from P H Petiver’ § in- 
complete figure, is probable. Linnzus, who trulted to this 
oe aes oe to- ‘have taken the bulbs for leaves. 
e follow 
Epis graninfeliom 3 Lian. known only by Plumier’s 
Jc. t. 176. f. 3 
i £ Cpidend un ore : ‘Ja acq. 
Amer. 228. 
Ceraia fmplicifima ; Loureir, Cran, 518. 
DEN 
Flos lyncis ; Fernand. Mex. 266, a aa daaiale plant 
appa haan mout akin to our fecond {pe 
The whole Cae Maxillaria of a fia Peruviana. See 
its Peis <2 
ith feveral foe of Angraecum i in Rumphius, to which 
we have already alluded; fee his v. -45— 
DENDROMETER, (from devo, a tree, ‘and PET PELs 
I meafure,) an inftrument for meafuring trees. The firit in- 
ttrumeut. for the purpofe of meafuring the trunk, the 
branches, and the bean ae tree, without atually touch- 
ing the tree, was contrived, t many years ago, by Mciirs. 
Duncombe and Whittel, ie called it the dead: Sih and 
objeéts in general, though not particularly intended for 
menfuration of trees, have likewife been called dent mai nite Se 
at a 
t 
by m oily ae lation, or from a able. 
a hance | ae thus afcertained, the fize of the obj: will 
afterwards be eafily determined from the angle which it i¢ 
Was to fubtend. e fhall now in the firft place deferibe 
s. Duncombe and “White? s original dendrometer ; fe- 
eae. we fhall defcribe eee inftrument lately gonna 
for the purpofe of meafuring trees but by immediate con- 
tact; and fhall, laftly, give a gsi idea of the other inftru- 
ments for meafuring diftan &c. which have likewifle ob-. 
nee the name of ee 
*© Mefirs. Duncombe and White el’s dendrometer confifts of 
a femicncl: A, (Plate VI. Survasings ji: Z pi peae into two 
me€e 
at 
vertical pofition. There is alfo a chord, D, parallel to the dia- 
meter, and a radius, E, pafling at right angles through the dia- 
— and chord. From a point on the radius, hangs an alti- 
er C, between the chord and diameter, to which is affixed a 
frail femicircle G, and a als to confine it in any aac 
The altimeter, which i ved to form the fame angle 
with the radius of the ae as the tree sole with the 
bomen) is divided from its centre both w nto aoe ual 
quarters. 
and radius, are expreffed degrees fr from 60 ing 
€ supe is icnbeed ah we 
s alfo a 
an angle to every five minutes, of th 
ftrument the flock M, (fe. 8.) of the fliding- piece is con- 
fined to the axis N, which moves concest vically paraliel to 
the elevation index, F, (fg: 7.) on the o} ppoiite _ to whic 
it is affixed. 1s index 1s 1 pe y a icale of equal di- 
vifions with the end of the 
gece and radius. At t 
; h es angles of eauen above or 
of depreffion below the horizon, meafured upon the femi- 
circle of the initrument, are determined to every five mi- 
nutes 
meter, by means of a groo 
of the fliding piece is affixed a moveable limb, Q, bee 
3G2 
