﻿( 138 .) 



HUTCHI'NSIA* *. 



Linnean Class and Order. Tetradyna'mia f, Siuculo , sa+. 



Natural Order. Crucifer.® §, Juss. Gen. PI. p. 237. — Sm. 

 Gram, of Bot. p. 138. — Rich, by Macgilliv. p. 498. — Crucifer® ; 

 subord. Pleurorhi'ze® ; tribe, Thlaspide®,op Pleurorhi'ze® 

 Angustise'pt® || ; Lindl. Syn. pp. 20, 21, & 27. ; Introd. to Nat. 

 Syst of Bot. pp. 14 to 18. — Loud, llort. Brit. pp. 498 & 499 ; Mag. 

 of Nat. Hist. v. i. p. 143 & 240. — Rosales ; subord. Rhceados® ; 

 tribe, Thlaspide® ; Burn. Outl. of Bot. pp. 614, 784, & 857. 



Gen. Char. Calyx equal at the base, of 4 spreading, elliptical, 

 ■concave, equal, deciduous sepals. Corolla of 4, inversely egg- 

 shaped, undivided petals. Filaments (see fig. 1.) 6, simple. An- 

 thers roundish. Germen (see fig. 1) oval, compressed. Style 

 various. Stigma blunt. Pouch ( siliculaj (fig. 3.) elliptic-oblong, 

 transversely compressed, nearly entire, of 2 cells ; valves (fig. 2.) 

 keel-shaped, not bordered ; partition (fig. 4.) narrow, crossing the 

 greater diameter of the pouch. Seeds (see fig. 4.) 2, or more, in 

 each cell, pendulous, egg-shaped ; cotyledons accumbent. 



Distinguished from other genera, with accumbent cotyledons 

 (o=), in the same class and order, by the nearly entire pouch, and 

 keeled valves destitute of a border ; the 2-seeded cells ; and simple 

 filaments. 



One species British. 



HUTCHI'NSIA PETR'E'A. Rock Hutchinsia. 



Spec. Char. Leaves pinnate, entire, smooth. Petals scarcely 

 longer than the calyx. Stigma sessile. Pouch blunt at both ends. 



Brown, in Alton’s Hortus Kewensis, v. iv. p. 82. — Ilook. Kl. Lond. t. 31.— 

 Sm. Kng. Fl.v. iii. p. 168. — Lindl. Syn. p. 28. — Hook. Brit. FI. p.296. — Walk. 

 FI. of Oxf. p. 184. — Don’s Gen. Syst. of Card, aud Bot. v. i p. 193. — Lepidium 

 petrae'v.m, Engl. Bot. t.l 11. — Jacq. FI. Austr. t. 131.— Linn. Sp. PI. p.899, — 

 Huds. FI. Angl. (2nded-) p.280. — Sm. FI. Brit. v. ii. p 681. — With. (7th ed.) 

 v. iii. p. 767. — Purt. Midi- FI. v. ii. p. 740. — Nasturtioluvi montanum, Gray's 

 Nat. Arr. v. ii. p.692. — Nasturtiolum montanum annuum tenuissime divi- 

 sum, Bobart, in Ray’s Syn. p. 304. 



Localities. On limestone rocks, and walls. Rare. — Derbysh. In Dove- 

 dale: Rev. W.T. Bree —Somcrselsh. On the locks about Goram’s Chair, 

 about five miles from Bristol: IliciiAiir) Kavek, and J . Sum a no. On St. 

 Vincent’s Rocks, Biistol: Hudson, and Dr. John Ford. At Uphill: Hud- 

 son.— Yorksh Rocks near the Waterfall at Burton in Bishopdale, Wensley 

 Dale: Mr. Brunton. — WALES. Carnarvonsh. Walls at Gloddaeth: Rev. 

 H. Davies. On rocks and stone fences above Llandudo ; not rare: N. J. 

 Winch, Esq. in Loud. Mag. of Nat. Ilist. v. ii. p. 281.— Denbighsh. On various 

 parts of the ruins of Castle Dinas Bran, at Llangollen : Mr. W.Chiusi v, jun. in 

 Mag. of Nat. Hist. v. vi. p.52: — Glamoryansh. On the wallsof Pennard Castle: 



Fig. 1. A separate Flower, shewing the Calyx, Corolla, Stamens, and Ger- 

 ,men.— Fig. 2. One of the Valves of the Pouch.— Fig. 3. A Pouch, with the 

 valves separating and shewing the Septum or Partition, and the Seeds —Fig. 4. 

 The Septum and Seeds, the valves being removed — Fig. 5. A Seed, with the 

 outer coat taken off to show the accumbent cotyledons. All magnified. 



* So named, in honour of Miss Hutchins, of Belfast : see next page, 

 f See Draba verna, f. 38, n. f- + See Crambe maritima, f. 107, n. f . 



§ See Draba verna, f. 38, a. || Augustus, narrow; septum, a partition. 



