This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
(C. fragrans, Haw. C. Reinwardtii, Reichb.). Corm 3/4in. or less in diam., with tunics of matted parallel fibers: leaves 4-5, as high as the flowers, otherwise like the last: upper spathe 1- or 2-lvd.: perianth-tube exserted; segments 1 1/2 in. long, pale or dark purple, often striped and feathered with dark purple; throats glabrous, whitish or yellowish; anthers yellow, twice as long as the filament; style-branches, orange-yellow, equaling or overtopping the anthers. S. France. B.M. 1110.
Corm globular, 1/2in. diam.: leaves usually 2, thin and flattish, and becoming 1/4in. broad, glaucous beneath: upper spathe 1-lvd.: perianth-tube scarcely exserted; segments 1 1/2 in. or less long, bright purple, and never striped, but often dark-blotched toward the tip; throat glabrous; anthers orange, a little longer than the white filaments; style-branches short, orange-yellow, somewhat fringed at the tip. Hungary.
Conn globular, 1/2in. diam.: leaves appearing with the flowers, narrow (1/8in. broad): upper spathe 1-lvd.: perianth-tube little exserted; segments 1 1/2 in. or less long, pale red-bluish, sometimes dark-blotched at the tip; throat glabrous; anthers pale orange, a little longer than the white glandular filaments; style-branches short, orange-yellow. Dal-matia and Servia. - Distinguished from C. vernus by its glabrous throat.
Corm globular, 3/4in. diam.: leaves 4-6, as high as the flower, glaucous beneath, 1/6in. broad: upper spathe 2-lvd.: perianth-tube short-exserted; segments 1-1 1/2 in. long, color of C. vermis; throat yellow and glabrous; anthers orange, twice as long as filaments; style-branches nearly entire, orange-red. Greece, Crete. Gn. W. 22:287. G.M. 49:54. variety purpureus, Hort. Flowers darker purple than the type. variety versicolor, Hort. Outer perianth-segments white feathered with purple or dark violet; inner segments white, yellow at base inside. Gn. 73, p. 201.
Corm 3/4in. diam., covered with honeycombed fibers: leaves 3-5, as high as the flower, very narrow, with reflexed edge and a white band: upper spathe 2-lvd.: perianth-tube much exserted; segments 1-1 1/2 in.long white to purple, the 3 outer ones striped; throat glabrous; anthers orange, twice the length of the orange filaments; style-branches scarlet, overtopping the anthers. S. E. Eu. - Varies to white.
ee. Throat of perianth pubescent or bearded.
Fig. 1115. Corm 1 in. or less diam.: leaves 2-4, as high as the flower, often 1/4in. broad, glaucous beneath, but green above, with reflexed edges, and a central white band: upper spathe 1-lvd., about as long as perianth-tube: perianth-segments 1-1 1/2 in. long, lilac, white or purple-striped; throat pubescent, never yellow; anthers lemon-yellow, exceeding the filaments; style-branches orange-yellow. S. Eu. B.M. 860, 2240. R.H. 1869, p. 331. Gn. 54, p. 79-The commonest garden crocus.
Fig. 1115. Crocus vermis. (X 1/3)
Corm 1 in. or less in diam.: leaves about 3, very narrow, as tall as the flower: upper spathe 1-lvd.: perianth-tube short exserted; segments l-l 1/2in. long, lilac, or the outer ones cream-colored and sometimes purple-feathered outside; throat yellow, slightly pubescent; anthers orange, twice as long as the glabrous filaments; style-branches nearly entire, orange. Italy.
Corm depressed-globose, 1 in. or less diam., with fine parallel fibers in the tunic which is slightly reticulated upward: leaves narrow-linear, not so tall as the flower, with reflexed margins and white central band: upper spathe 2-lvd., foliaceous: perianth-tube yellow, scarcely exserted; segments white, l 3/4in. long; throat orange-yellow and bearded; anthers orange, twice as long as the filaments; style-branches orange, slightly divided at tip. Dalmatia. G.C. III. 37:163. G.M. 51:455.
bb. Style-branches fimbriate at the top, or once-forked.
Fig. 1116. Corm nearly or quite 1 in. diam.: basal spathe present: leaves 4-6, exceeding the flowers, very narrow: upper spathe 1- or 2-lvd.: perianth-tube little exserted; segments 1- 1 1/2 in. l°ng, lilac or even white, the outer ones buff and 3-striped on the outside; anthers yellow, exceeding the filaments; style-branches fimbriate. Italy. B.R. 1993. Gn. 54, p. 79. Very early.
Fig. 1116. Crocus Imperati. ( X 1/2)
Corm nearly globose, 1/2 - 3/4in. diam.: basal spathe absent: leaves 4-5, as tall as the flower, becoming 1/4in. broad: upper spathe 2-lvd.: perianth-tube little exserted; segments bright orange-yellow and never striped, 1 1/2 in. or less long; throat glabrous; anthers orange, twice the length of the roughish filaments; style-branches orange, slender-forked. variety Suterianus, Baker (C. chrysanthus, Bot. Reg.) has narrower and more rolled leaves Greece to Asia Minor. No. 2.
bbb. Style-branches cut into capillary divisions: basal spathe absent: upper spathe 2-lvd.
(C. syriacus, Boiss. & Gaill.). Corm 3/4in. or less diam.: leaves 4-6, as high as the flowers, narrow-linear: perianth-tube short, exserted; segments 1 in. or less long, orange-yellow, the outer brown-tinged outside; style-branches divided into many capillary parts. Asia Minor. B.M. 6416. - Rare in cultivation variety graveolens, Baker (C. graveolens, Boiss. & Reut. C. syriacus, Baker). Leaves narrower: outer segments flushed with black or bearing 3 distinct stripes of black down the back.
(C. Fleischerianus, Herb. C smyrnensis, Poech). Corm 3/4in. or less diam., the tunics a dense mass of regularly interlacing fibers: leaves about 6 to a tuft, as high as the flowers, very narrow and having reflexed edges and a white band: perianth-tube not exserted; segments 1-1 1/4 in. long, white, acute, the outer with 3 slender lilac lines on the back; throat yellow and glabrous; anthers small, orange, about as long as the filaments; style-branches brick-red. Asia Minor, on limestone hills.