Order I. 
PENTANDRIA MONOGYNIA. 
159 
25.'50 
2531 
2532 
2533 
2534 
2535 
2536 
2537 
2538 
2539 
2540 
2541 
2542 
2543 
2544 
25*5 
2546 
2547 
2548 
2549 
2550 
2551 
2552 
2553 
2554 
2555 
2556 
2557 
2558 
2559 
2560 
2561 
2562 
2563 
2564 
§ 3. Unarmed. Leaves lobed, sinuate, angular, toothed, or entire. 
Leaves ovate lanceolate entire or lobed, Racemes cymose opp. to the leaves, Cor. 5-parted 
Leaves lanceolate sinuate tomentose bright-green, Pedunc. few-flowered. Sepals ovate acute 
Stem wavy. Leaves ovate cordate upper lanceolate. Corymbs opposite the leaves 
Stem smooth. Leaves cuneate at the base sinuate smooth, Peduncles few-flowered short 
Leaves ovate repand angular smooth. Peduncles 1-flowered cernuous. Berries torulose 
Leaves ovate angular repand smooth unequal at base, Pedunc. 1-flowered cernuous. Berries round 
Leaves oblong lanceolate subrepand. Peduncles 1-flowered outside the leaves 
Branches rounded, and leaves smooth ovate entire. Flowers umbelled 
Branches smooth angular toothed. Leaves ovate smooth entire. Flowers numerous umbelled 
Stem and branches angular toothed. Leaves subovate sinuate angular. Flowers umbelled 
Leaves ovate toothed angular ciliated, Umbels extrafoliaceous stalked 
Stem angular, Leaves ovate toothed naked. Flowers in umbels 
Branches strigose pubescent angular winged. Wings toothed. Leaves ov. rep. smooth. Flowers in umbels 
Branches angular toothed pubescent, Leaves ovate repand upper entire. Flowers in umbels 
Stem rounded villous. Leaves ovate angular toothed villous hoary. Flowers in umbels 
\ 4. Unarmed. Leaves quite entire. 
Stem shrubby. Branches powdery. Leaves oblong lanceolate powdery on both sides. Racemes spreading 
Leaves ovate and subcordate waved curled acuminate. Flowers corymbose 
Leaves oval pointed at each end smooth, Racemes cymose 
Stem erect. Leaves ovate lanceolate attenuated at each end pubescent, Racemes 2 and 3-chotomous 
Leaves ov. obi. acuminate entire downy. Surface discol. Axils leafless. Corymbs terminal dichotomous 
Leaves ovate oblong acuminate woolly axillary. Leaflets semicircular. Corymbs di-trichotomous 
Lvs. in pairs one obi. narrow, towards each end obt. other smaller obov. ellipt. Cymes stalk, opp. the Ivs. 
Leaves ovate lanceolate acute shining smooth, Peduncles 1-flowered, Berries oval 
Branches spiny. Leaves elliptical. Peduncles filiform 1-flowered 
Stalks axillary 1-flowered, Cal. 10-cleft, Leaves mostly in pairs subsessile elliptical 
Stem climbing flexuose, Lvs. ovate lane, smooth acuminate, Pedunc. in pairs, Cal. unequally toothed 
§ 5. Prickly. Leaves entire or sinuate-angular. 
Leaves discolored the lower sinuate prickly upper entire unarmed, Pedunc. few-flowered 
Stem unarmed, Leaves lanceolate repand undulated acute 
Leaves lanceolate acuminate revolute on both sides at the base 
Stem prickly. Leaves lanceolate pubescent beneath entire edge revolute at base 
Leaves lanceolate repand obtuse reflexed at edge 
Stem prickly, Prickles acerose. Leaves cordate unarmed repand wavy, the young ones purple 
Leaves lanceolate oblong attenuate at each end roughish beneath prickly. Raceme short unarmed 
Stem nearly unarmed. Leaves ovate oblong sinuate repand rough. Corymb extrafoliaceous stalked 
Stem nearly unarmed. Leaves lanceolate ellipt. entire above smooth beneath tomentose. Cymes mealy 
Stem downy. Leaves lanceolate long entire hoary beneath. Racemes terminal, Sepals subulate 
Stem with downy prickles, Leaves lanceolate acute unarmed above smooth beneath hoary 
2554 
2553 
and Miscellaneous Particulars. 
are readily procured by sowing the seeds, which, with care, will produce tubers the third year, and a full crop 
tbe tourth As few of the early sorts produce blossoms, to procure seeds from them deprive the plant of its 
tubers as they appear, and keep the runners from which they proceed above ground, by not earthing up the 
u J^iiol"! , ''T' seeds will soon be produced This Mr. Knight completely proved, and the rationale 
ilf f K P ^'u, ^ Philosophical Transactions for 1806. It appears that the same sap gives existence both to 
the tuber and blossom, and that whenever a plant of the potatoe affbrds either seeds or blossoms, a diminution 
A^'^''^-^ of tubers or an increased expenditure of the richness of the soil, must necessarily take place. This 
rffffh "'^ . .^"^"^J?*^ ^'^t practice adopted by the Dutch florists with their bulbous flowers, viz. to pinch 
tn f }!L .V k'^^''" ^° strengthen the bulbs. This, in the potatoe, Mr. Knight thinks may add an ounce in weight 
cultivatSfeven1n^LM''ciltu''rr''^^ ^^""^^ ^ ^^"^ Practice is now general among scientific 
th?^rn^f^ ^f" ^^"o^n disease of potatoes, which frequently disappoints the cultivator of a crop, or renders 
WP nf/v " ll"^ ^ F^'^i ''''"^ty of opinions exist as to this disease : without enumerating these, 
i^ r^^nl . ' ^1 general result of experiments by diflferent persons, that the curl arises in most, or at least 
b^eTinLrfn .V "'"'f ''/'^^^ ^"''P '^^^ st"'='^' ^^^''om the employment of seed stock which has 
Sered with ^^"^ ^^^^^ ^ept exposed to the light and air instead of being 
SdenerT Zl\ I -^^.t' % *^ preserve their juices. The experiments of various farmers and 
The culVurP nf [hf ^uT^' ^^^l^^':'^ Caledonian Hort. Mem"^, lead to the above conclusions, 
on dun^ nr fn. L^i"^ potatoe, both in the held and garden, is universally known. It may be forced in pots or 
hom^ or pVih ' -^"Z' ^""I purpose, using sets from tubers that have been retarded a year in an ice- 
nouse or cold place, is found a great advantage. Thus, in planting in December 1823, use tubers of crop 
182Z These, from the long period of 
icn more rapid growth than sets 
ayers of hght earth and potatoes _ 
K^^k'^'J'^.^^''^™'^^'"' and they will produce a 
PoStnJ/ K ^^ithout either leaves, roots, or runners: {Hort. Trans, i. 225.) 
temneraturr^n^tl P^^se^-ved by burying in pits in dry ground, so deep as to be under the influence of surface 
icraiure, or so enveloped with thatch as to produce the same effect. At a certain depth, they will keep 
of niuoh mnrp r^^H „ ^°",g P^."'^'! reposewhich they have had, will be found highly exciteable by heat, and 
nate Wr^ nf iiX growth than sets of the preceding crop. As matter of curiosity, boxes containing alter- 
frora frost in h Potatoes of the last season but one may be placed in any dry covered place, free 
brood of young tubers in contact with the old ones on the 
