('201. ) 
A'RU.ll*. 
Linnean Class and Order. MoNCE'ciAf, Polya'ndriA. 
Natural Order. Aroi'deh;, Juss. Gen. PI. p. 23. — Sm. Gram, 
of Bot. p. 67. — Lincll. Syn. p. 246. ; Introcl. to Nat. Syst. of Bot. 
p. 286. — Rich, by Macgilliv. p. 3S8. — Loud. Hort. Brit. p. 541. — * 
Mack. FI. 1-libern. p. 26 L — Juxcales; sect. Acorina:; type, 
Callace.e ; Burn. Outl. of Bot. v. i. pp. 403, 408, & 410. — 
Piperit.e, Linn. 
Gen. Char. Spalha of 1 leaf, upright, oblong, convolute at the 
base ; converging above ; contracted towards the middle ; coloured 
within ; containing the flowers, which are situated on a spadix or 
common stalk (see fig. 1, d.), the upper part of which is naked, 
coloured, nearly cylindrical, and at length withering. Flowers 
monoecious, without cither calyx or corolla ; the barren ones of 
numerous stamens, with very short and thick filaments, disposed 
in a dense ring, of several rows, round the spadix, within the con- 
voluted part of the spatha (see fig. l,u), and surmounted, at a small 
distance above, by another aggregate ring, of apparently abortive, 
slender-pointed filaments (see fig. 1, c.). Anthers of 2 lateral, 
elliptic-oblong, single-celled lobes, opening by solitary pores. 
Fertile Flowers (see fig. 1 , b.) in a dense, compound ring at the 
base of the spadix. Germen (see fig. 1, b.) sessile, inversely heart- 
shaped. Style none. Stujma downy. Derry (see figs. 2 c: 3.) 
juicy, globose, 1 -celled, many-seeded. Seeds (see fig. 3.) roundish, 
or angular, with a simple embryo. 
Distinguished from other genera, in the same class and order, by 
the spatha of 1 leaf, enclosing a spadix, which bears the barren 
flowers in a dense ring about the middle, and the fertile ones at the 
base, its summit being naked ; and by the 1-celled, many-seeded berry. 
One species British. 
A 'RUM MACULA'TUM. Spotted-leaved Arum. Cuckow-pint. 
Wake-robin. Lords and Ladies. 
Spec. Char. Leaves all radical, halbert-shaped, entire. Spadix 
club-shaped, blunt, shorter than the spatha. 
Engl. Bot. t. 1298. — Curt. FI. Lond. t. 111. — Woodv. Mod. Bot. v. i. p. 74. t. 
25. — Steph. & Church. Med. Bot. v. i. t. 22. — Curt. Blit. Entomol. v. xiii. t. C07. — 
Linn. Sp. Pi. p. 1370. — Iluds. FI. Angl. p. 395. — Willd. Sp. Pi. v. iv. pt. I. p. 483. 
— Sm. FI. Brit. v. iii. p. 1024. ; Engl. FI. v. iv. p. 140. — With. (7th cd. ) v. iii. 
p. 669. — Lindl. Syn. p. 246. — Hook. Brit. FI. p. 400. — Lightf. FI. Scot. v. i. p. 
528. — Sibtli. FI. Oxon. p, 177. — Abbot’s FI. Bedf. p. 197. — Davies’ Welsh. Bot. 
p. 90. — Purt. Midi. FI. v. ii. p. 431. — Relh. FI. Cant. (3rded.) p. 394. — Thornt. 
Fain. Herb. p. 750, with a figure. — Hook. FI. Scot. p. 272. — Grev. FI. Edin. p. 
202. — FI. Devon, pp. 154 & 114. — Johnst. FI. Berw. v. i. p. 205. — Winch’s FI. of 
Northumb & Durham, p. 61. — Walker’s FI. of Oxf. p. 280. — Bab. FI. Bath. p. 53. — 
Mack. Catal. of Pi. of Ircl. p. 82. ; FI. Ilibern. p. 262. — Arum, Ray’s Syn. p. 
266. — Arum vulyare, Johnson’s Gerarde, p. 834. — Mill. Icon. p. 35. t. 52. f. 1. — 
Gray’s Nat. Arr. v. ii. p. 38. 
Fig. 1. The Spadix, a. Barren Flowers ; b. Germens, or Fertile Flowers ; 
C. C. Roundish bodies terminated by longish filaments; these Linn;eus called the 
nectaries. — Fig. 2. A Spike of Berries. — Fig. 3. A Berry divided transversely, show- 
ing the Seeds. 
“ From Am, Gr. noxa, injury ; because the root, when eaten without prepa- 
ration, affects the tongue with a pungency as if it were pricked with a needle. 
Phillips. t See Bryonia dioica, folio 83, note t. 
