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ZYGOPHYCEÆ.
Genus 50. STAUROSFEHraUM. (1843.)
Spores four cornered, between the truncated corners of four
sessile lateral cells (cells of all the species np to twenty times
longer than broad.)
t Sporoderm porose.
S. quadratum, Hass,
t t Sporoderm verrucose.
„ S. graoillimum, Hass.
T tt Sporoderm smooth.
S. eapuoinnm, Kutz.
S. viride, Kutz.
t S p o ro d e rm p o ro se .
Stautospermum quadratum. (Hass.) DeBary.
Sterile cells 10 to 20 times longer than broad
Epispore quadrangular, with the angles truncate, not repli-
S g e r ï d e ) "0 on
S iz e . Cells -015-'02 mm. Zygospore -Od-'Od-l mm.
De Bary Coÿ. p 81 t. 8, f. 11. Cleve Mon. Zyg. p. 84 t
10, f. 8. Eabh. Alg. Eur. iii. 259. ^ ’
Stanrocarpus quadrangulatus, Hass. Ann. Nat. Hist xi n
434. Jenner. El. Tunb. Wells, 184.
Stanrocarpus qu adrata8,llasii. M g . 119, t 48 f 1
J jo ^ o ja inadrangulatus, Hass. Ann.’ Nat. ’Hist. xii. 185,
In ponds, ditches, &c.
w ith f ;g o™ X ^ 4 0 a ‘ ^ « - i - g - tìn g cells
tt Spoi'oderm verrucose.
Staurospermum g r a c illim um . (Hass.)
Sterile cells 8 to 15 times as long as broad, pale yellowish
S p S S r v ^ r c t * ^ ’ - ‘ - e .
S iz e . C e l ls -0 0 6 '008 mm. Z y g o sp o re '02 mm. diam.
De Bary Conj. p. 81. Eabh. Alg. Enr. iii. 260
Staurocarpus gracillimus,'Ras.s.. Alg. 179 t 40 f 9 T
F l. T ..b , W e ll,, « 4 . H . i . A . . . N Ì . m J J f l s f l t “ “ )
In bogs and moor pools.
-« le g a tin g cells with
Z Y G N E M A C EÆ . 107
t t t Sporodeim smooth.
S tau x o sp e zm um c a p u c iu um . Kutz.
Sterile cells 6 to 14 times as long as broad.
Zygospore quadrate, angles obtuse or truncate, sides often
deeply sinuate. Sporoderm even.
S iz e . - 0 1 5 X '0 2 mm. Z ygospore-0 5 X -0 4 mm.
De Bary Conj. p. 81. Rabh. Alg. Eur. iii. 259.
Stanrocarpus ghitinosus, Hass. Alg, 177, t. 47, f. 1.
Staurocaipus ccerulescens, Hass. Alg. t. 47, f. 2. Jenner El.
Tunb. Wells, 184.
Mougeotia glutinosa, Hass. Ann. Nat. Hist. xxii. t. 7, f. 1.
Staurocarpus capucinus, Hass. Ann. Nat. Hist. xii. p. 184,
t. 7, f. 2.
Mougeotia ccerulescens, Eng. FL v. 360. Harv. Man. 141.
Eng. Bot. Ed. 2, t. 2506.
Conferva ccerulescens, Eng. Bot. t. 2457.
Agardhia ccerulescens, Gray Arr, i. 299.
Leda capucino, Bory in Mong. & Nest. Ex. 793.
In ditches and ponds.
The ixlameuts soon acquire a bluish tinge, and in drying assume a
purple hue.
Plate X L IV . fig. 1. a, sterile cells X 400; 5, conjugating cells with
zygospores X 400.
S ta u z o sp e zm um v iz id e . Kutz.
Sterile cells 10 to 20 times as long as broad,
Epispore quadrangular, angles truncate and replicate, sides
concave, smooth.
S iz e . Cells '008 mm. Zygospore '025 mm.
De Bary Conj. p. 81, t. 2, f. 17-18. Cleve Mon. Zyg. p. 34,
t. 10, f. 4-5. Eabh. Alg. Eur. iii. 260.
Staurocarpus gracilis, Hass. Ann. Nat. Hist. xii. 185, t. 7,
f. 5. Hass. Alg. 179, t. 49, f. 1. Jenner FL Tunb. Wells, 184.
Staurocarpus virescens, Hass. Alg, 178, t. 48, f. 2.
Staurocarpus affinis, Hass. Ann, Nat. Hist. xii. 185, t. 7, f. 4.
Staurospermum franconicum, Reinsch. Algen. FI. p. 217.
In ditches.
Plate X L IY . fig. 2 . a, sterile cells X 400; 5, conjngating cells
with zygospores X 400 ; e, development of zygospores from conjugated
cells X 400, after De Bary,
8uh-Family 3 . G onatonemeæ .
Cells cylindrical, much elongated, united in threads, with
axile plates of chlorophyll. Agamospores produced without
conjugation in cells continuous with, and partitioned from the
mother cells.
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