Height is the trick. The marks crossing a stitch’s post say how tall it is — none for half double, one for double, two for treble, one more for every extra yarn over. Single crochet is the odd one out: just an X. Read rounds from the center outward, rows from the bottom up.
(sc, ch 2, sc)Acorn Group (sc, ch 2, sc)
2-FPdc-dc tog2 Front Post Double Crochets and 1 Double Crochet Together
2dc-bobble2-dc Bobble
2dc-cl2-dc Cluster
2dtr-cl2-dtr Cluster
2tr-cl2-tr Cluster
3-dc shell3-dc Shell (3 dc in one stitch)
3dc-cl3-dc Cluster
3dc-pc3-dc Popcorn
3tr-cl3-tr Cluster
4-loop puff4-Loop Puff
4dc-bobble4-dc Bobble
4dc-cl4-dc Cluster
4dc-pc4-dc Popcorn
4hdc-puff4-hdc Puff
4tr-bobble4-tr Bobble
4tr-cl4-tr Cluster
5-loop star5-Loop Star
5dc-cl5-dc Cluster
5tr-bobble5-tr Bobble
5tr-cl5-tr Cluster
angled puffAngled Puff
beg 5-loop starBeginning 5-Loop Star
beg bobbleBeginning 3-dc Bobble
beg bobbleBeginning 5-dc Bobble
beg pcBeginning Popcorn
beg-dc2tog*Beginning Cluster (ch 3 + 1 dc together)
beg-dc3tog*Beginning Cluster (ch 3 + 2 dc together)
beg-dc5tog*Beginning Cluster (ch 3 + 4 dc together)
beg-tr2tog*Beginning Cluster (ch 4 + 1 tr together)
bobble3-dc Bobble
bobble5-dc Bobble
BP 3dc-pcBack Post 3-dc Popcorn
BPdcBack Post Double Crochet
BPdc2togBack Post Double Crochet 2 Together
BPdc3togBack Post Double Crochet 3 Together
BPdc4togBack Post Double Crochet 4 Together
BPdc5togBack Post Double Crochet 5 Together
BPdtrBack Post Double Treble Crochet
BPhdcBack Post Half Double Crochet
BPtrBack Post Treble Crochet
BPtr2togBack Post Treble Crochet 2 Together
BPtr3togBack Post Treble Crochet 3 Together
bull*Bullion Stitch
chChain
ch-10 loop10-Chain Loop
ch-12 loop12-Chain Loop
ch-2 picotCh-2 Picot
ch-4 picotCh-4 Picot
ch-spChain Space
dcDouble Crochet
dc-incdc Increase
dc2togDouble Crochet 2 Together
dc3togDouble Crochet 3 Together
dc4togDouble Crochet 4 Together
dc5togDouble Crochet 5 Together
dtrDouble Treble Crochet
FP 3dc-pcFront Post 3-dc Popcorn
FPdcFront Post Double Crochet
FPdc2togFront Post Double Crochet 2 Together
FPdc3togFront Post Double Crochet 3 Together
FPdc4togFront Post Double Crochet 4 Together
FPdc5togFront Post Double Crochet 5 Together
FPdtrFront Post Double Treble Crochet
FPhdcFront Post Half Double Crochet
FPtrFront Post Treble Crochet
FPtr2togFront Post Treble Crochet 2 Together
FPtr3togFront Post Treble Crochet 3 Together
front dtrDouble Treble Worked Below, in Front
front dtr2togTwo Double Trebles Worked Below, Together
hdcHalf Double Crochet
hdc-inchdc Increase
hdc2togHalf Double Crochet 2 Together
hdc3togHalf Double Crochet 3 Together
ldc*Linked Double Crochet
long sc3togElongated Single Crochet 3 Together
loop dcDouble Crochet Worked Below into an Unused Loop
loop stLoop Stitch
loop trTreble Worked Below into an Unused Loop
ltr*Linked Treble Crochet
magic ringMagic Ring / Adjustable Loop
mini nuppMini Nupp
pawPaw (4 Spike Single Crochets Together)
pcPopcorn Stitch
picotPicot
puff3-hdc Puff
rev scReverse Single Crochet (Crab Stitch)
scSingle Crochet
sc catching loopSingle Crochet Catching a Loop
sc-incsc Increase
sc2togSingle Crochet 2 Together
sc3togSingle Crochet 3 Together
shellShell
sl stSlip Stitch
slip knotSlip Knot
smock scSmocking Single Crochet (3 Rows Below)
spike dcSpike Double Crochet
spike hdcSpike Half Double Crochet
spike scSpike Single Crochet
spike stSpike Stitch
star stStar Stitch
t-ch1Turning Chain (1)
t-ch2Turning Chain (2)
t-ch3Turning Chain (3)
t-ch4Turning Chain (4)
t-ch5Turning Chain (5)
t-ch6Turning Chain (6)
trTreble Crochet
tr-inctr Increase
tr2togTreble Crochet 2 Together
tr3togTreble Crochet 3 Together
tr4togTreble Crochet 4 Together
trtrTriple Treble Crochet
V-stV-Stitch
W-stW-Stitch
* Crochet Bobble’s own symbol. Where a standard defines one we follow it — the Craft Yarn Council first, then the Japanese chart standard. For these stitches neither does, so we drew them and say so: Beginning Cluster (ch 3 + 1 dc together), Beginning Cluster (ch 3 + 2 dc together), Beginning Cluster (ch 3 + 4 dc together), Beginning Cluster (ch 4 + 1 tr together), Bullion Stitch, Linked Double Crochet, Linked Treble Crochet. Check the key of any pattern you meet them in.