24. 
THE DICTIONARY 
OF GARDENING, 
Thalictrum—continued. 
T. aquilegifolium (Columbine-leaved).* Feathered or Tufted 
Cites . disposed in a corymbose panicle ; sepals white, 
fugacious ; stamens usually purple, sometimes white. May to 
July. l. tripinnate; leaflets sub-orbicular, smooth, deeply 
toothed ; stipules ovate, twin. Stem fistular, purple, mealy. 
h. 1ft. to 3ft. Europe and Asia, 1731, (B. M. 1818; J. F. A. 318.) 
T. & Sree (dark purple).* Stamens and stems dark 
purple. 
T. a. formosum (beautiful). Stamens dark purple, dilated at 
apex. (B. M. 2025.) 
T., a. roseum (rosy). f., sepals rose-coloured. 1880. 
FIGH Rha PANICLE OF THALICTRUM FLAVUM. 
` 
T, flavum (yellow). False Rhubarb ; Fon Rue, &c. fi. often 
umbellate, erect, crowded ; sepals pale yellow, small fg cers 
bright yellow ; panicle compound, sub-corymbose or pyramidal. 
July and August. l. ternately bi- or tripinnate ; leaflets lin. to 
e long, suree- anas Stem = to 4ft..high, stout. Rootstock 
yellow, creeping. uro) ritain) and Asia. ak: 
(Sy. En. B. 8.) e / oe 
p vt ous). jl. crowded in an erect, compound 
panicle; sepals four or fi ello J d Jul 
5 s four or five, yellow. June an . |, leafi 
ovate-orbicular, three-lobed ; lobes deeply ‘Sock. Gita eres, 
round, striated, mealy. +. 2ft. to 5ft. South Europe, 1798. : 
T. minus (lesser). f. yellow, green, drooping, in lax panicl 
Summer. J. triangular, three or EAA a leaflets REET 
acute or obtusely-lobed, often glaucous, Northern hemisphere 
Tonn a: sont 3.) Pe the forms f this species 
make de: e border or ants on acco thei i 
_ Maidenhair-like foliage. m ett ak ER 
T. petaloideum (petaloid-sepaled). fl. corymbose; 
nearly round ; filaments flesh-coloured ; Keto ye ow. June 
~ and July. 2 pig oo J peceennes : leaflets smooth, ovate, 
_ obtuse, entire or three-lobed. tem round, almost x 
h. lġft. Dahuria, 1799. (L. B. C. 891.) ne 
T. tuberosum (tuberous-rooted).* f/i. loosely corymbose ; sepals 
ar , White, oval, blunt. June. 1. owded.. orbire bi-tripin. 
s white, 
ate; leaflets orbicular, three-lobed 
| h 1 ft. Spai 1713. , Smooth. Root grumose, 
2 bor germs | . fusion of leaves and stem into one 
_ THAMNEA (from thamnos, a shrub ; alluding to the 
nature of the plant). ORD. Bruniacee. 
genus. The species is a pretty, little, greenhouse under- - 
i shrub. - It thrives in a 
Thamnea—continued. 
T, uniflora (one-flowered). fl. white, small, terminal, solitary ; 
calyx adnate with the ovary, tive-lobed; petals five, with two- 
keeled claws and an ovate, spreading lim); stamens five, in- 
cluded. April. Z. very small, somewhat rhomboidal, short, 
blunt-keeled, closely pressed, spirally inserted ; upper ones rather 
longer, forming an involucre to the flower. Branches filiform, 
erect, fastigiate. h. lft. South Africa, 1810. 
THAMNOCHORTUS (from thamnos, a shrub, and 
chortos, grass; alluding to the habit of the plants). 
Shrubby Grass: Orb. Restiacee. A genus comprising 
ten species of greenhouse, perennial herbs, confined to 
South Africa. Flowers dicecious, arranged in spikelets. 
Flowering stems from a creeping or short and erect 
rhizome, Rush-like, undivided. T. dichotomus has been 
introduced, but it possesses no horticultural merit.- 
THAMNOPTERIS. Included under Asplenium. 
THAPSIA (the old Greek name used by Theophrastus, 
so called from the Island of Thapsos). Deadly Carrot. 
Including Melanoselinum and Monizia. ORD. Umbellifere. 
A small genus (four species) of greenhouse or half-hardy, 
perennial (or biennial ?), tall herbs, sometimes having a 
very elongated, shrubby stem, natives of the Mediterranean 
region and Madeira. Flowers yellowish, dirty-white, or 
purplish, in compound, many-rayed umbels; calyx teeth 
small; petals inflexed at apex, shortly acuminate; in- 
volucre often wanting. Leaflets pinnately decompound; 
segments incised-pinnatifid. TF. garganica has long been- 
celebrated among the Moors for its healing qualities. The 
species thrive in loamy soil. They may be increased by 
seeds, or by breaks from the carrot-like root. 
T. decipiens (deceiving). Black Parsley. f. white; petals 
obovate, emarginate; involucre composed of many cut leaves. 
June and July. l. tripinnate ; leaflets ovate, acuminate, serrated, 
the ultimate ones usually confluent ; petioles sheathing. Stem 
terete, simple, naked below, shrubby. kh. 6ft. Madeira, 1867. 
(B. M. 5670.) 
T. edulis (edible). fl. white, small, disposed in compound, many- 
rayed umbels, furnished with partial and universal involucres of 
entire leaflets. May. J. large, decompound, fern-liké, in tufts, 
from 1ft. to 3ft. in length (including the stalks). h. 4ft. Madeira, 
1857. The roots, which have long, curved, horn-like divisions, 
and are black outwards and white within, are eaten in Madeira. 
Syn. Monizia edulis (B. M. 5724). 
. ganica (Garganian). Drias-plant. i. yellow; involucre 
few-leaved. July and August. Z. bi-tripinnatisect, shining ; seg- 
ments linear, acute, elongated, quite entire along the margins, 
decurrent or confluent.. Stem terete, glabrous. h. 2ft. to 4ft. 
Mediterranean region, 1683. (B. M. 6295; S. F. G. 287.) 
T; villosa (villous). fl. yellow; involucre and involucels almost 
wanting. June and July. 7. tripinnate, and, as well as the 
petioles, villous ; leaflets oblong, sinuately pinnatitid, the lower 
ones deflexed. Stem terete, glabrous. h. 3ft. to 4ft. South 
Europe, 1710. 
THATCH PALMS. A native name for various 
species of Euterpe, Sabal, Thrinaz, &e. 
THEA. Included under Camellia (which see). 
THECA. A synonym of Tectona (which see). 
THECA. A spore-case ; a sac, tube, shell, or any kind 
of case containing spores. 
THECOSTELE (from theke, a receptacle, and stele, 
a column; in allusion to the shape of the gynostegium). 
ORD. Orchidew. A monotypic genus. The species, a 
stove, epiphytal Orchid, native of Malacca and the 
Malayan Archipelago, and bearing a simple raceme of 
mediocre flowers, is as yet unknown in cultivation. 
THELA. A synonym of Plumbago (which see). 
THELEBOLUS (from the Greek works thele, a 
nipple, and ballo, I throw; in allusion to the form of the 
Fungus, and to the mode of ejecting the spores, described 
below). A small genus of Fungi, which spread over 
decaying leaves and sticks, and upon the soil in 
woods during winter. Only one species (T. terrestris) is 
known to be British, and this is by no means common. 
It forms yellowish patches, sometimes several inches in 
breadth, composed of a woolly mycelium, on which are 
numerous smooth, hemispherical bodies; each of these 
